Give me 6 hours to chop a tree, I will spend the first 4 sharpening my axe.
Science is what we have learned about how to keep from fooling ourselves.
I am heartened to find so much wit in you, that you’d give thought to consequences and choose your way with reason, not passion only.
The deepest sin against the human mind is to believe things without evidence.
Maybe true travel is not the transportation of the body, but a change of perception, renewing the mind.
I think it is a mistake to judge science by Nobel Prizes.
Freedom is the right to tell people what they do not want to hear.
Education consists mainly of what we have unlearned.
The whole of science is nothing more than a refinement of everyday thinking.
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.