Industrialize or perish.
To educate a person in the mind but not in morals is to educate a menace to society.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
Evil being the root of mystery, pain is the root of knowledge.
No power and no treasure can outweigh the extension of our knowledge.
What is now proved was once only imagined.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
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 child miseducated is a child lost.
As we acquire more knowledge, things do not become more comprehensible but more mysterious.
There is one quality which one must possess to win, and that is definiteness of purpose, the knowledge of what one wants, and a burning desire to possess it.
Never help a child with a task at which he feels he can succeed.
I do not know how to teach philosophy without becoming a disturber of the peace.
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.
The most savage controversies are those about matters as to which there is no good evidence either way.
When you know better you do better.
The man who is fond of books is usually a man of lofty thought, and elevated opinions.
The ability to observe without evaluating is the highest form of intelligence.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.