Science is what we have learned about how to keep from fooling ourselves.
Common sense is the collection of prejudices acquired by age eighteen.
If I have seen further it is by standing on the shoulders of Giants.
Science is a way of thinking much more than it is a body of knowledge.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
The most important part of teaching is to teach what it is to know.
In order to stave off covetouness, greed, and spite, citizens world over must be educated.
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.
With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.
Necessity is the mother of invention.
When you know better you do better.
No man's knowledge here can go beyond his experience.
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.
Better know nothing than half-know many things.
The task of a writer is not to solve the problem but to state the problem correctly.
An investment in knowledge pays the best interest.
You can never be overdressed or overeducated.
The deepest sin against the human mind is to believe things without evidence.
My weapon is literature
Learning never exhausts the mind.