The fundamental concept in social science is Power, in the same sense in which Energy is the fundamental concept in physics.
Whatever we well understand we express clearly, and words flow with ease.
Thoughts without content are empty, intuitions without concepts are blind.
All concepts, even those which are closest to experience, are from the point of view of logic freely chosen conventions.
None of the abstract concepts comes closer to fulfilled utopia than that of eternal peace.
Concepts, like individuals, have their histories and are just as incapable of withstanding the ravages of time as are individuals.
The absurd is the essential concept and the first truth.
Society exists only as a mental concept in the real world there are only individuals.
Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge.
A systematic revolution of basic concepts begins with Einsteinian science. In the very detail of its concepts a relativism of the rational and the empirical is established. Science then undergoes what Nietzsche called 'an upheaval of concepts,' as if the earth, the universe, things, possessed a different structure from the fact that their explanation rests upon new foundations. All rational organization is 'shaken' when the fundamental concepts undergo dialectical transformation.
