The most savage controversies are those about matters as to which there is no good evidence either way.
In mathematics you don't understand things. You just get used to them.
If there were no bad people, there would be no good lawyers.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
Science is not only a disciple of reason but, also, one of romance and passion.
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.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
I like poems you can tack all over with a hammer and there are no hollow places.
Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.
The most important part of teaching is to teach what it is to know.
My weapon is literature
Patience is a virtue, and I'm learning patience. It's a tough lesson.
Men are born ignorant, not stupid. They are made stupid by education.
Common sense is the collection of prejudices acquired by age eighteen.
The books that the world calls immoral are books that show the world its own shame.
A witty saying proves nothing.
Science is what we have learned about how to keep from fooling ourselves.
I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.
No power and no treasure can outweigh the extension of our knowledge.
The only good is knowledge and the only evil is ignorance.
When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.