We shall never know how many acts of cowardice have been motivated by the fear of appearing not sufficiently progressive.
Suffering passes; having suffered never passes.
A great philosophy is not a philosophy without reproach; it is philosophy without fear.
It is the essence of genius to make use of the simplest ideas.
Everything begins in mysticism and ends in politics.
The honest man must be a perpetual renegade, the life of an honest man a perpetual infidelity. For the man who wishes to remain faithful to truth must make himself perpetually unfaithful to all the continual, successive, indefatigable renascent errors