An investment in knowledge pays the best interest.
Better know nothing than half-know many things.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
Study without desire spoils the memory, and it retains nothing that it takes in.
If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.
Science is not only a disciple of reason but, also, one of romance and passion.
I am indebted to my father for living, but to my teacher for living well.
It is what you read when you don't have to that determines what you will be when you can't help it.
Liberty without Learning is always in peril and Learning without Liberty is always in vain.
No power and no treasure can outweigh the extension of our knowledge.
When you know better you do better.
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
Education is a human right with immense power to transform. On its foundation rest the cornerstones of freedom, democracy and sustainable human development.
If you can't explain it simply, you don't understand it well enough.
Dare to think for yourself.
Most people have never learned that one of the main aims in life is to enjoy it.
The most savage controversies are those about matters as to which there is no good evidence either way.
The whole of science is nothing more than a refinement of everyday thinking.
To every action there is always an equal and opposite or contrary, reaction