The brain may be regarded as a kind of parasite of the organism, a pensioner, as it were, who dwells with the body.

This actual world of what is knowable, in which we are and which is in us, remains both the material and the limit of our consideration.

I am often surprised by the cleverness, and now and again by the stupidity, of my dog; and I have similar experiences with mankind.

Thus also every keen pleasure is an error and an illusion, for no attained wish can give lasting satisfaction.

The animal lacks both anxiety and hope because its consciousness is restricted to what is clearly evident and thus to the present moment: the animal is the present incarnate.

If a relationship is perfectly natural there will be a complete fusion of the happiness of both of you-owing to fellow-feeling and various other laws which govern our natures, this is, quite simply, the greatest happiness that can exist.

There is no vice of which a man can be guilty, no meanness, no shabbiness, no unkindness, which excites so much indignation among his contemporaries, friends and neighbours, as his success. This is the one unpardonable crime, which reason cannot defend, nor humility mitigate.