„By abstaining from all definite content, whether as formal logic and theory of science or as the legend of Being beyond all beings, philosophy declared its bankruptcy regarding concrete social goals.“

— Theodor W. Adorno

Tags:

„Philosophy's position with regard to science, which at one time could be designated with the name "theory of knowledge," has been undermined by the movement of philosophical thought itself. Philosophy was dislodged from this position by philosophy.“
— Jürgen Habermas
„Logic is the science not of external forms of thought, but of the laws of development "of all material, natural and spiritual things", i. e., of the development of the entire concrete content of the world and of its cognition, i. e., the sum-total, the conclusion of the History of knowledge of the world.“
— Vladimir Lenin