Kant thought things, not because they were true, but because he was Kant.

He was always seeking for a meaning in life, and here it seemed to him that a meaning was offered; but it was obscure and vague . . . He saw what looked like the truth as by flashes of lightening on a dark, stormy night you might see a mountain range. He seemed to see that a man need not leave his life to chance, but that his will was powerful; he seemed to see that self-control might be as passionate and as active as the surrender to passion; he seemed to see that the inward life might be as manifold, as varied, as rich with experience, as the life of one who conquered realms and explored unknown lands.

It is an illusion that youth is happy, an illusion of those who have lost it; but the young know they are wretched for they are full of the truthless ideal which have been instilled into them, and each time they come in contact with the real, they are bruised and wounded. It looks as if they were victims of a conspiracy; for the books they read, ideal by the necessity of selection, and the conversation of their elders, who look back upon the past through a rosy haze of forgetfulness, prepare them for an unreal life. They must discover for themselves that all they have read and all they have been told are lies, lies, lies; and each discovery is another nail driven into the body on the cross of life.

Anyone can tell the truth, but only very few of us can make epigrams

Considering how foolishly people act and how pleasantly they prattle, perhaps it would be better for the world if they talked more and did less.

Nothing in the world is permanent, and we’re foolish when we ask anything to last, but surely we’re still more foolish not to take delight in it while we have it.