I feel that there is no such thing as ultimate forgetting; traces once impressed upon the memory are indestructible.

Thou hast the keys of Paradise, oh, just, subtle, and mighty opium!

The pulpit style of Germany has been always rustically negligent, or bristling with pedantry.

The mere understanding, however useful and indispensable, is the meanest faculty in the human mind and the most to be distrusted.

The whole body of the arts and sciences composes one vast machinery for the irritation and development of the human intellect.

Solitude, though it may be silent as light, is like light, the mightiest of agencies; for solitude is essential to man. All men come into this world alone and leave it alone.

All parts of knowledge have their origin in metaphysics, and finally, perhaps, revolve into it.