It is even a difficult thing for him [humans] to admit to himself that the insect or the bird perceives an entirely different world from the one that man does.

One may certainly admire man as a mighty genius of construction, who succeeds in piling an infinitely complicated dome of concepts upon an unstable foundation, and, as it were, on running water.

Man has much power of discourse which for the most part is vain and false; animals have but little, but it is useful and true, and a small truth is better than a great lie.

Once you were apes, yet even now man is more of an ape than any of the apes.

Why does man not see things? He is himself standing in the way: he conceals things.

The abdomen is the reason why man does not readily take himself to be a god.