Penny: "Look, you are a great guy, andit is the things you love that make you who you are." (S01E14)(Penny saidto Leonard)

　　Howard： "Love is not asprint, it's a marathon, a relentless pursuit that only ends when she fallsinto your arms - or hits you with the pepper spray." (S01E03)(Howard告诉Leonard爱情是一场马拉松)

　　Sheldon： The anthropicprinciple states that if we wish to explain why our universe exists the way itdoes, the answer is that it must have qualities that allow intelligentcreatures to arise who are capable of asking the question. As I am doing so eloquentlyright now. (S06E01 人择原理)

　　Bernadette: Sheldon doesn't know when he'sbeing mean because the part of his brain that should know is getting a wedgiefrom the rest of his brain. (S05E21) (Sheldon的大脑)

　　Sheldon: "The best number is 73. Why?73 is the 21st prime number. It's mirror, 37, is the 12th and it's mirror, 21,is the product of multiplying 7 and 3... and in binary 73 is a palindrome,1001001, which backwards is 1001001." (73最好的数字)