Highly developed spirits often encounter resistance from mediocre minds.
Incompetence is the true crisis.
The only source of knowledge is experience.
On the other hand, the concept owes its meaning and its justification exclusively to the totality of the sense impressions which we associate with it.
The greatest knowledge a person can possess is the address of the local library.
A tyranny based on ... deception and maintained by terror must inevitably perish from the poison it generates within itself.