I cannot teach anybody anything. I can only make them think

Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.

What we know is a drop, what we don't know is an ocean.

Know what you are talking about.

Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.

An investment in knowledge pays the best interest.

Suddenly degrees aren't worth anything. Isn't that true? When I was a student, if you had a degree, you had a job. If you didn't have a job it's because you didn't want one. And I didn't want one, frankly.

The first idea the child must acquire is that of the difference between good and evil.

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

Education is the kindling of a flame, not the filling of a vessel.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

The fullness of knowledge only comes through the awareness of ignorance.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

No man's knowledge here can go beyond his experience.

I am so clever that sometimes I don't understand a single word of what I am saying.

Science is not only a disciple of reason but, also, one of romance and passion.

Reading is to the mind what exercise is to the body.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.