Anger is a wind which blows out the lamp of the mind.
Rationality attracts conscientious humans, whereas mysticism attracts fools.
The best brains of the Nation may be found on the last benches of the Classroom
Go to Heaven for the climate. Hell for the company.
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.
All real philosophers have been artists in the realm of concepts.
Everything must be made as simple as possible. But not simpler.
Freedom is the right to tell people what they do not want to hear.
I would rather have questions that can’t be answered than answers which can’t be questioned.
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.