"The value of a man is not measured by the number of truths he has accumulated, but by the extent to which he has freed himself from error."

"The world is a collection of unhappy beings."

"Neither for music, nor for poetry, nor for fine art have they any real or true sense and susceptibility, and it is mere mockery on their part, in their desire to please, if they affect any such thing."

"Optimism, where it is not merely the thoughtless chatter of fools, is not only a absurd doctrine, but also a truly wicked way of thinking, a bitter mockery of the unspeakable sufferings of humanity."

"That the Negroes were enslaved more than other races, and on a large scale, is evidently a result of their being, in contrast to other races, less intelligent."