To him who looks upon the world rationally, the world in its turn presents a rational aspect. The relation is mutual.
If you find yourself in a fair fight, you should reexamine your tactics.
Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.
Worse than any severe mental illness, is the illness of bigotry.
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
The whole of science is nothing more than a refinement of everyday thinking.
The best brains of the Nation may be found on the last benches of the Classroom
Give me 6 hours to chop a tree, I will spend the first 4 sharpening my axe.
Science and religion are not at odds. Science is simply too young to understand.
You can never be overdressed or overeducated.