The pathfinders of modern thought did not derive what is good from the law. ... Their role in history was not that of adapting their words and actions to the text of old documents or generally accepted doctrines: they themselves created the documents and brought about the acceptance of their doctrines.

Whoever is not prepared to talk about capitalism should also remain silent about fascism.

Plato and his objectivistic successors ... preserved the awareness of differences that pragmatism has been invented to deny the difference between thinking in the laboratory and in philosophy, and consequently the difference between the destination of mankind and its present course.

At present, when the prevailing forms of society have become hindrances to the free expression of human powers, it is precisely the abstract branches of science, mathematics and theoretical physics, which ... offer a less distorted form of knowledge than other branches of science which are interwoven with the pattern of daily life, and the practicality of which seemingly testifies to their realistic character.

The disparagement of empirical evidence in favor of a metaphysical world of illusion has its origin in the conflicy between the emancipated individual of bourgeois society and his fate within that society.

Notwithstanding their attacks on the basic conception of rationalism, on synthetic a priori judgments, that is, material propositions that cannot be contradicted by any experience, the empiricist posits the forms of being as constant.

Whoever desires to live among men has to obey their laws this is what the secular morality of Western civilization comes down to. ... Rationality in the form of such obedience swallows up everything, even the freedom to think.