If the facts don't fit the theory, change the facts.
Men are born ignorant, not stupid. They are made stupid by education.
Books are for people who wish they were somewhere else.
Common sense is the collection of prejudices acquired by age eighteen.
Make it a rule never to give a child a book you would not read yourself.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
Knowing is not enough; we must apply. Willing is not enough; we must do.
God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.
I cannot live without books.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
Science is what we have learned about how to keep from fooling ourselves.
The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.
If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.
Patience is a virtue, and I'm learning patience. It's a tough lesson.
I have no special talents. I am only passionately curious.
The reading of all good books is like conversation with the finest men of past centuries.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
We could never learn to be brave and patient, if there were only joy in the world
Most people have never learned that one of the main aims in life is to enjoy it.
An investment in knowledge pays the best interest.
My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.