Youth doesn't reason, it acts. The old man reasons and would like to make the others act in his place.

Some suggestions for you :

Only useless things are indispensable.

The family spirit has rendered man carnivorous.

The world is divided into two categories: failures and unknowns.

My ass contemplates those who talk behind my back.

The essence of a man is found in his faults.

Good taste is as tiring as good company.

Pain has its reasons, pleasure is totally indifferent.

God invented concubinage, satan marriage.

If you want to have clean ideas, change them as often as your shirt.

Let us never forget that the greatest man is never more than an animal disguised as a god.

A new gadget that lasts only five minutes is worth more than an immortal work that bores everyone.

Men have always need of god! A god to defend them against other men.

Maybe men are separated from each other only by the degree of their misery.

Knowledge is ancient error reflecting on its youth.