Hold a true friend with both your hands.

Man demands truth and fulfills this demand in moral intercourse with other men; this is the basis of all social life. One anticipates the unpleasant consequences of reciprocal lying. From this there arises the duty of truth. We permit epic poets to lie because we expect no detrimental consequences in this case. Thus the lie is permitted where it is considered something pleasant. Assuming that it does no harm, the lie is beautiful and charming.

Talking much about oneself can also be a means to conceal oneself.

Every man has his price. This is not true. But for every man there exists a bait which he cannot resist swallowing. To win over certain people to something, it is only necessary to give it a gloss of love of humanity, nobility, gentleness, self-sacrifice - and there is nothing you cannot get them to swallow. To their souls, these are the icing, the tidbit; other kinds of souls have others.

Distrust all in whom the impulse to punish is powerful.

You call yourself free? I want to hear your ruling thought and not that you have escaped a yoke. Are you such a one as was permitted to escape a yoke? There are some who threw away their ultimate worth when they threw away their servitude. Free from what? What is that to Zarathustra! But your eyes should announce to me brightly: free for what?

What was silent in the father speaks in the son, and often I found in the son the unveiled secret of the father.