To him who looks upon the world rationally, the world in its turn presents a rational aspect. The relation is mutual.
The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.
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.
All real philosophers have been artists in the realm of concepts.
It is the mark of an educated mind, to entertain a thought without accepting it.
Freedom is the right to tell people what they do not want to hear.
Science and religion are not at odds. Science is simply too young to understand.
Science is what we have learned about how to keep from fooling ourselves.
Give a girl an education and introduce her properly into the world, and ten to one but she has the means of settling well, without further expense to anybody.
I strongly believe that fundamental science cannot be driven by instructional, industrial and government or military pressures.