Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
Knowledge, Action, Devotion are complementary to each other.
I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion
What is freedom of expression? Without the freedom to offend, it ceases to exist.
Those who fail to learn the lessons of history are doomed to repeat them.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
Evil being the root of mystery, pain is the root of knowledge.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.
A cynic is a man who knows the price of everything, and the value of nothing.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
Most people have never learned that one of the main aims in life is to enjoy it.
Imagination is more important than knowledge.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
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.
Knowledge becomes evil if the aim be not virtuous.
If the facts don't fit the theory, change the facts.
Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.
The first idea the child must acquire is that of the difference between good and evil.
The man who does not read good books has no advantage over the man who can't read them.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.