Mathematics has the inhuman quality of starlight, brilliant and sharp, but cold.
Levels of Infinity: Selected Writings on Mathematics and PhilosophyThe alienation of man thus appeared as the fundamental evil of capitalist society.
Selected Writings in Sociology and Social PhilosophyIs there any knowledge in the world which is so certain that no reasonable man could doubt it?
The Problems of PhilosophyHowever far back you go you will find all experiences linked by slender threads.
Philosophy Made SimpleAs long as one believes in philosophy, one is healthy; sickness begins when one starts to think.
Tears and Saints