Authors:

No real blood flows in the veins of the knowing subject constructed by Locke, Hume, and Kant, but rather the diluted extract of reason as a mere activity of thought.

Wilhelm Dilthey, Rudolf A. Makkreel, Frithjof Rodi (1991). “Introduction to the Human Sciences”, p.50, Princeton University Press
No real blood flows in the veins of the knowing subject constructed by Locke, Hume, and Kant, but rather the diluted extract of reason as a mere activity of thought.