"We cannot solve our problems with the same thinking we used when we created them."
"I learned very early the difference between knowing the name of something and knowing something."
"The roots of education are bitter, but the fruit is sweet"
"The pleasure of finding things out."
"We are what we repeatedly do. Excellence, then, is not an act, but a habit"
"It's not that I am so smart. But I stay with the questions much longer."
"The unexamined life is not worth living"
"Any fool can know. The point is to understand."
"Judge a man by his questions, not by his answers."
"Opinion is the medium between knowledge and ignorance"
"The first principle is that you must not fool yourself. And you are the easiest person to fool. "
"Don't you have time to think?"
"Nothing exists except atoms and empty space. Everything else is opinion. "
"I would rather have questions that can't be answered than answers that can't be questioned"
"I would trade all my technology for an afternoon with Socrates"
"It is the mark of an educated man to be able to entertain a thought without accepting it"