Sheldon Cooper is one of the most interesting characters in The Big Bang Theory. His quirky mannerisms, need to always be right, obliviousness to social cues, and eccentric personality, make him a fan favorite character in the series. His personality is so entertaining and unique that there is even a spin-off and prequel to the show, called Young Sheldon, that only focuses on the growing up years of Sheldon. While the adult Sheldon is played by Jim Parsons, the younger version is played by Iain Armitage. Even though Sheldon is eccentric, there is no denying the fact that he is a genius. Therefore, here are some witty quips from the character across The Big Bang Theory Universe, which prove that he is smart, sassy, and funny.
Sheldon's self-awareness, his views on creation, and other smart lines said by him in The Big Bang Theory universe
1. “Love is in the air? Wrong! Nitrogen, oxygen, argon, and carbon dioxide are in the air.”

The Big Bang Theory is one of the most famous sitcoms in modern times. And what makes the show so popular is the fact that it blends humor and science to create a unique perspective on things. While the show revolves around four scientifically nerdy friends living as roommates and being socially awkward, the three out of the four, still try to make their lives normal by searching for relationships and love. However, Sheldon Cooper in the earlier seasons, is strictly opposed to the notion of human intimacy. Therefore, Sheldon says these iconic lines in one of the scenes, which are hilarious, actually wise, and memorable. Even though Sheldon finally finds love in the later seasons, he was one of the most rigid out of all the four in the early seasons of the show, when it came to love. Not only did Sheldon oppose the idea of love, he was also puzzled by it and felt it to be repulsive. He therefore rejects the popular saying about love being in the air and instead, goes on a rant about how it is actually filled with chemical elements—a typical Sheldon response.
2. “If I could, I would, but I can’t, so I shan’t

Viewers of The Big Bang Theory know that Sheldon does not have any filter when it comes to speaking and he does not know how to read social cues. Therefore, if there is something on his mind, it is on his mouth. Even though Sheldon does mature over the course of the show and begins to understand social etiquettes, he still maintains much of his mannerisms till the end of the series. One of his qualities that he cannot part with is his commitment to truth. Sheldon does not understand the art of being subtle and if he wants to say something, he will say it like it is. Further, if he wants to get down to the truth of something, he will not let it go. Therefore, in one of the episodes, when Penny seemingly gets intimate with Raj and says to Sheldon that it’s nothing like that, Sheldon is puzzled. He makes it his life’s mission to find out why she slept with Raj and what were her motivations for doing so. As he is in the midst of all this pondering, Sheldon delivers the above quote to Leonard, which proves that Sheldon is always truthful. Further, it is a wise quote as everyone should know their strengths or weaknesses and back out if they cannot do something.
3. “It’s just that gravity is precisely as strong as it needs to be. And if the ratio of the electromagnetic force to the strong force weren’t one percent, life wouldn’t exist. What are the odds that would happen all by itself?”

While the adult Sheldon has said a bevy of intelligent things in The Big Bang Theory, his younger self has also not been far behind. Young Sheldon is a spin-off and prequel to The Big Bang Theory, and revolves around the growing up years of Sheldon as he enters adolescence and deals with the world around him in his own way. Young Sheldon is another excellent show for fans of Sheldon Cooper as the series sheds a lot of light into the character of Sheldon as a child. The series showcases that even as a child and teen, Sheldon was extremely genius and the show has some memorable quotes. One of them is the one mentioned above, which Sheldon says to his mother after she begins to lose faith in God due to a young girl being abused. While the quote is full of wisdom and scientific knowledge, it is also a poignant and emotional one. Sheldon keeps his scientific bent of mind aside, to make his mother believe in the beauty of life, which is unlike him. The two also share a beautiful moment, which make this instance entirely wholesome.
4. “I have been encouraged, sustained, inspired, and tolerated not only by my wife, but by the greatest group of friends anyone ever had.”

Sheldon Cooper might be annoying and obnoxious, but if there is one quality in him that needs admiration then it is his self-awareness. The Big Bang Theory often brings out humor at Sheldon’s expense as he frustrates and annoys his friends with his eccentric habits and quirks. However, Sheldon does know that he is different from the average lot and is thankful to his friends and family to have tolerated with him. As mentioned before, Sheldon overcomes many of his immaturities over the course of the show and becomes a more patient, understanding, and mature man. Therefore, the above line is important as it underlines that Sheldon might be unaware of social ques, but he is smart enough to know his impact upon others. The quote above is perhaps one of those rare moments in the show when Sheldon rightfully acknowledges the importance of his wife and friends in helping him through life and being there for him.
5. “I’m not a nerd. I’m a highly intelligent, socially challenged, egomaniacal misanthrope.”

While viewers might think that the adult Sheldon Cooper is full of sass, they might not know that the young Sheldon is equally fiery in his responses. During one of the episodes in Young Sheldon, Sheldon admits and gives a brief of his entire personality in the quote mentioned above. When someone calls him nerd, he reacts by saying this classic quote that is a window into the personality of Sheldon in a gist. As mentioned above, Sheldon might be annoying but his one redeeming quality is that he is aware. Therefore, he does not hesitate when he admits that he is not the classical nerd, even though he is highly intelligent. Further, in a rare instance of clarity, he admits that he is socially awkward and therefore hate humans and is full of himself. All the adjectives that Sheldon used are a perfect description of his personality and his own admission is hilarious and even smart.
6. “If outside is so good, why has mankind spent thousands of years trying to perfect inside?”

Sheldon Cooper is one of the most unique characters on television. His mannerisms, dialogues, and habits are so quirky that the creators even created a spin-off focusing in his childhood. Both in The Big Bang Theory and Young Sheldon, Sheldon is shown as someone who hates going outside unless absolutely needed. He dislikes human interaction and would much rather stay indoors, in his cocoon, and work on some science project or theory. Therefore, when in one of the episodes, Raj and Sheldon are left alone in the flat and Raj coaxes Sheldon to go out with him for some fun, Sheldon immediately says no. The only time Sheldon agrees to going out is when there is a comic con or a movie premiere. But Raj’s offer was regarding none of these and therefore Sheldon says these funny yet thought-provoking words that make Raj annoyed but do carry some grain of truth in them. This is the best part about Sheldon’s anecdotes, they are funny, sometimes over-the-top, but they do end up being wise. There is no winning against Sheldon in any debate and he proves himself once again.
7. “The most frightening thing about that is the missing comma.”

Fans of The Big Bang Theory know that Sheldon is beyond smart. However, he also gets scared easily. Therefore, in one of the episodes of the show, Raj and Howard decide to prank Sheldon during Halloween and scare him. This is just one of the many instances when his friends have taken advantage of his fearful nature and have done pranks on him. In the episode, Raj and Howard plan a trick that involves the words, “see you in hell Sheldon”, written on a wall. When Sheldon encounters their prank, he is scare beyond wits but he still maintains his composure and is more interested in pointing out the grammatical error of the sentence. This is just another instance that proves Sheldon’s smart yet funny nature. It also shows that Sheldon’s brain never stops working.
8. “I’m nine years old. My social skills are a work in progress.”

This hilarious yet wise line is said by the younger version of Sheldon in Young Sheldon. As mentioned above, Sheldon Cooper from The Big Bang Theory, has never been great in catching social cues and is the show’s prequel, this habit of his is also highlighted. Even as a young boy, Sheldon does not understand the gravity of a situation at times and blabbers on without thinking. Therefore, when younger Sheldon is berated by his parents for throwing a fuss over dinner in front of everyone, Sheldon says these comedic lines in response. While the dialogue is funny, it is not far away from reality. And in actuality, it does make sense as many nine-year-olds are not well-versed in the customs of society. Even though Sheldon never makes out of this phase and continues to be oblivious to social mores, even in his adult life, this particular line is extremely funny and intelligent in some regards.
9. “Age is a state of mind, Leonard. In here, I’m 90.”

There is no denying the fact that Sheldon from The Big Bang Theory, is one of the most rigid and stubborn characters. And it is this rigidity and stubborn-ness that makes him similar to an old man. Hilariously enough, Sheldon knows this and in one of the episodes, he himself admits that he is like an older man in front of Leonard. During a conversation, Sheldon points towards his head and says this quote, which is hilarious and truthful. However, it is also true that Sheldon sees himself as an old man because he thinks that he is full of wisdom. However, while he is intelligent, he resembles an older person more because of his habit of being rigid. But the fact that Sheldon has some amount of self-awareness and is able to make out that he behaves like an old man, is still commendable and makes him a likeable character. Despite his annoyances and eccentricities, Sheldon slips in some revelatory and hilarious utterance in between that end up making him look smart.
10. “I don’t need a calculator, dad. I am one.”

Some of Sheldon Cooper’s quotes are full of wisdom, some are wise yet hilarious, and some of them are just full of lofty arrogance. This one belongs to the latter kind. Sheldon’s know-it-all attitude is highlighted in plenty in Young Sheldon, which is the spin-off of The Big Bang Theory. During one of the episodes, Sheldon’s father suggests that Sheldon get a calculator. However, Sheldon deems it an afront to his intelligence and instead says these lines, which reek of egoism. Even though Sheldon is correct and he either does calculations in his mind or on pen and paper, the above quote is an example of how Sheldon is wise and full of himself at the same time. Many geniuses are humble and down to earth, but that’s not the case with Sheldon.