Once you've married, be strict but just with your wife, don't allow her to forget herself, and when a misunderstanding arises, say: "Don't forget that I made you happy.
Everything on earth is beautiful, everything -- except what we ourselves think and do when we forget the higher purposes of life and our own human dignity.
I will begin with what in my opinion is your lack of restraint. You are like a spectator in a theatre who expresses his enthusiasm so unrestrainedly that he prevents himself and others from hearing. That lack of restraint is particularly noticeable in the descriptions of nature with which you interrupt dialogues; when one reads them, these descriptions, one wishes they were more compact, shorter, say two or three lines.
Silence accompanies the most significant expressions of happiness and unhappiness: those in love understand one another best when silent, while the most heated and impassioned speech at a graveside touches only outsiders, but seems cold and inconsequential to the widow and children of the deceased.
Man has been endowed with reason, with the power to create, so that he can add to what he's been given. But up to now he hasn't been a creator, only a destroyer. Forests keep disappearing, rivers dry up, wild life's become extinct, the climate's ruined and the land grows poorer and uglier every day.
In a century or two, or in a millennium, people will live in a new way, a happier way. We won"t be there to see it - but it"s why we live, why we work. It"s why we suffer. We"re creating it. That"s the purpose of our existence. The only happiness we can know is to work toward that goal.
Write about this man who, drop by drop, squeezes the slave's blood out of himself until he wakes one day to find the blood of a real human being--not a slave's--coursing through his veins.
And I despise your books, I despise wisdom and the blessings of this world. It is all worthless, fleeting, illusory, and deceptive, like a mirage. You may be proud, wise, and fine, but death will wipe you off the face of the earth as though you were no more than mice burrowing under the floor, and your posterity, your history, your immortal geniuses will burn or freeze together with the earthly globe.
When you're thirsty and it seems that you could drink the entire ocean that's faith; when you start to drink and finish only a glass or two that's science.
Wherever there is degeneration and apathy, there also is sexual perversion, cold depravity, miscarriage, premature old age, grumbling youth, there is a decline in the arts, indifference to science, and injustice in all its forms.