When those who must do the fighting have the right to decide between war and peace, history will no longer be written in blood.

Life is not made for happiness, but for achievement. "The history of the world is not the theatre of happiness; periods of happiness are blank pages in it, for they are periods of harmony"; and this dull content is unworthy of man.History is made only in those periods in which the contradictions of reality are being resolved by growth, as the hesitations of and awkwardness of youth pass into the ease and order of maturity.

The only thing unqualifiedly good in this world is a good will - the will to follow the moral law, regardless of profit or loss for ourselves.Never mind your happiness; do your duty."Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness."Let us seek the happiness in others; but for ourselves, perfection - whether it bring us happiness or pain.

The great achievement of Kant is to have shown, once for all, that the external world is known to us only as sensation; and that the mind is no mere helpless tabula rasa, the inactive victim of sensation, but a positive agent, selecting and reconstructing experience as experience arrives.

Kant is the last person in the world whom we should read on Kant.