"If 'A' is success in life, than A = x + y + z. Work is 'x'. Play is 'y'. and 'z' is keeping your mouth shut."
"Only a life lived for others is a life worthwhile."
"The most beautiful thing we can experience is the mysterious."
"Two things are infinite; the universe and human stupidity, and I'm not even sure about the universe."
"Common sense is a collection of prejudices acquired by age 18."
"When you sit with a nice girl for two hours, it seems like two minutes. When you sit on a hot stove for two minutes, it seems like two hours. That's relativity."
"As we gain knowledge, things do not become more comprehensible, but more mysterious."
"Insanity: doing the same thing over and over again and expecting different results."