One repays a teacher badly if one always remains nothing but a pupil.

Hold a true friend with both your hands.

There cannot be a God because if there were one, I could not believe that I was not He.

Good manners disappear in proportion as the influence of a Court and an exclusive aristocracy lessens; this decrease can be plainly observed from decade to decade by those who have an eye for public behavior, which grows visibly.

It is only those who know how to feel that "this is not good" who devise improvements.

Be careful when you fight the monsters, lest you become one.

The superman is the meaning of the earth. Let your will say: the superman is to be the meaning of the earth! I beseech you, my brothers, be true to the earth, and do not believe those who speak to you of otherworldly hopes! They are poisoners, whether they know it or not.