Money is human happiness in the abstract.

Solitude will be welcomed or endured or avoided, according as a man's personal value is large or small.

Hatred is an affair of the heart; contempt that of the head.

The heavy armor becomes the light dress of childhood; the pain is brief, the joy unending.

If the lives of men were relieved of all need, hardship and adversity; if everything they took in hand were successful, they would be so swollen with arrogance that, though they might not burst, they would present the spectacle of unbridled folly-nay, they would go mad. And I may say, further, that a certain amount of care or pain or trouble is necessary for every man at all times. A ship without ballast is unstable and will not go straight.

If at times I have thought myself unfortunate, it is because of a confusion, an error. I have mistaken myself for someone else... Who am I really? I am the author of The World as Will and Representation, I am the one who has given an answer to the mystery of Being that will occupy the thinkers of future centuries. That is what I am, and who can dispute it in the years of life that still remain for me?

Empirical sciences prosecuted purely for their own sake, and without philosophic tendency are like a face without eyes.