Opinion is the medium between knowledge and ignorance.
I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.
Reading is to the mind what exercise is to the body.
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.
Better know nothing than half-know many things.
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
If help and salvation are to come, they can only come from the children, for the children are the makers of men.
If the facts don't fit the theory, change the facts.
I think that kids have a greater capacity for processing things than we give them credit for.
Books are for people who wish they were somewhere else.
If I have seen further it is by standing on the shoulders of Giants.
A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.
I do not know how to teach philosophy without becoming a disturber of the peace.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
Liberty without Learning is always in peril and Learning without Liberty is always in vain.
God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.
Science is a way of thinking much more than it is a body of knowledge.
The man who is fond of books is usually a man of lofty thought, and elevated opinions.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.