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