The first rule is not to lose. The second rule is not to forget the first rule.
The educated differ from the uneducated as much as the living differ from the dead.
Man once surrendering his reason, has no remaining guard against absurdities the most monstrous, and like a ship without rudder, is the sport of every wind.
Educating the mind without educating the heart is no education at all.
That rifle on the wall of the labourer’s cottage or working class flat is the symbol of democracy. It is our job to see that it stays there.
If you find yourself in a fair fight, you should reexamine your tactics.
The only true wisdom is in knowing you know nothing.
I strongly believe that fundamental science cannot be driven by instructional, industrial and government or military pressures.
If one devalues rationality, the world tends to fall apart.
To him who looks upon the world rationally, the world in its turn presents a rational aspect. The relation is mutual.