“Happiness is good for the body, but it is grief which develops the strengths of the mind.”

“Happiness is beneficial for the body, but it is grief that develops the powers of the mind.”

“It is grief that develops the powers of the mind.”

“We have such numerous interests in our lives that it is not uncommon, on a single occasion, for the foundations of a happiness that does not yet exist to be laid down alongside the intensification of a grief from which we are still suffering.”

“Having a body is in itself the greatest threat to the mind... The body encloses the mind in a fortress; before long the mind is besieged on all sides, and in the end the mind has to give itself up.”

“At every new torment which is too hard to bear we feel yet another vein protrude, to unroll its sinuous and deadly length along our temples or beneath our eyes. And thus gradually are formed those terrible ravaged faces, of the old Rembrandt, the old Beethoven, at whom the whole world mocked. And the pockets under the eyes and the wrinkled forehead would not matter much were there not also the suffering of the heart. But since strength of one kind can change into a strength of another kind, since heat which is stored up can become light and the electricity in a flash of lightning can cause a photograph to be taken, since the dull pain in our heart can hoist above itself like a banner the visible permanence of an image for every new grief, let us accept the physical injury which is done to us for the sake of the spiritual knowledge which grief brings; let us submit to the disintegration of our body, since each new fragment which breaks away from it returns in a luminous and significant form to add itself to our work, to complete it at the price of sufferings of which others more richly endowed have no need, to make our work at least more solid as our life crumbles away beneath the corrosive action of our emotions.”

“Pleasures are like photographs: in the presence of the person we love, we take only negatives, which we develop later, at home, when we have at our disposal once more our inner dark room, the door of which it is strictly forbidden to open while others are present.”