Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
The ability to observe without evaluating is the highest form of intelligence.
It is beyond a doubt that all our knowledge begins with experience.
If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.
Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.
Men are born ignorant, not stupid. They are made stupid by education.
With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
Never help a child with a task at which he feels he can succeed.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
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 deepest sin against the human mind is to believe things without evidence.
A little knowledge is a dangerous thing. So is a lot.
Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
All stable processes we shall predict. All unstable processes we shall control.
Education is the kindling of a flame, not the filling of a vessel.
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
Investigate, educate and organize.
The man who does not read good books has no advantage over the man who can't read them.