I like poems you can tack all over with a hammer and there are no hollow places.
Science is what we have learned about how to keep from fooling ourselves.
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
The only true wisdom is in knowing you know nothing.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.
Liberty without Learning is always in peril and Learning without Liberty is always in vain.
I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.
Reading without reflecting is like eating without digesting.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
The first idea the child must acquire is that of the difference between good and evil.
A little knowledge is a dangerous thing. So is a lot.
Knowledge becomes evil if the aim be not virtuous.
An investment in knowledge pays the best interest.
Educate the children and it won't be necessary to punish the men.
Industrialize or perish.
The man who does not read good books has no advantage over the man who can't read them.
I decided to teach because I think that any person who studies philosophy has to be involved actively.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
Civilization is a race between disaster and education.
I cannot live without books.