Vol. II: XIX. Philosophical Maxims. Morals. Polemics and Speculations: 1141.
The Da Vinci Notebooks
The soul can never be corrupted with the corruption of the body, but is in the body as it were the air which causes the sound of the organ, where when a pipe bursts, the wind would cease to have any good effect. 633
287:633 : Compare No. 845.