We learn history not in order to know how to behave or how to succeed, but to know who we are. - Leszek Kołakowski

A modern philosopher who has never once suspected himself of being a charlatan must be such a shallow mind that his work is probably not worth reading.

Marxism has been the greatest fantasy of our century. It was a dream offering the prospect of a society of perfect unity, in which all human aspirations would be fulfilled and all values reconciled.

Carnap made a detailed analysis of Heidegger’<nowiki/>s statement, “Nothing nihilates,” in order to show that it is purely verbal, devoid of empirical meaning. (Incidentally, this is the only sentence from existentialist philosophy the majority of contemporary positivists appear familiar with.)