The first idea the child must acquire is that of the difference between good and evil.
The real solution lies in a world in which charity will have become unnecessary.
I learned very early the difference between knowing the name of something and knowing something.
Seek knowledge from the cradle to the grave.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
I do not know how to teach philosophy without becoming a disturber of the peace.
I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion
Knowledge becomes evil if the aim be not virtuous.
Evil being the root of mystery, pain is the root of knowledge.
If the facts don't fit the theory, change the facts.
When you know better you do better.
Courage, conviction and confidence.
The most savage controversies are those about matters as to which there is no good evidence either way.
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.
If there were no bad people, there would be no good lawyers.
Human behavior flows from three main sources: desire, emotion, and knowledge
I like poems you can tack all over with a hammer and there are no hollow places.
Don't learn to do, but learn in doing.
No power and no treasure can outweigh the extension of our knowledge.
Any sufficiently advanced technology is indistinguishable from magic.