He who has a why to live can bear almost any how.
Is man one of God's blunders? Or is God one of man's blunders?
One should die proudly when it is no longer possible to live proudly.
Amor Fati -- "Love Your Fate", which is in fact your life.
The true man wants two things: danger and play. For that reason he wants woman, as the most dangerous plaything.
In heaven, all the interesting people are missing.
People who have given us their complete confidence believe that they have a right to ours. The inference is false; a gift confers no rights.
The essence of all beautiful art, all great art, is gratitude.
A thought comes when it will, not when I will.
And once you are awake, you shall remain awake eternally.
The visionary lies to himself, the liar only to others.
Ultimately, it is the desire, not the desired, that we love.
The lonely one offers his hand too quickly to whomever he encounters.
The doer alone learneth.

He who has attained the freedom of reason to any extent cannot, for a long time, regard himself otherwise than as a wanderer on the face of the earth -- and not even as a traveler towards a final goal, for there is no such thing. But he certainly wants to observe and keep his eyes open to whatever actually happens in the world; therefore he cannot attach his heart too firmly to anything individual; he must have in himself something wandering that takes pleasure in change and transitoriness.

For To Be Married
The slow arrow of beauty. The most noble kind of beauty is that which does not carry us away suddenly, whose attacks are not violent or intoxicating (this kind easily awakens disgust), but rather the kind of beauty which infiltrates slowly, which we carry along with us almost unnoticed, and meet up with again in dreams; finally, after it has for a long time lain modestly in our heart, it takes complete possession of us, filling our eyes with tears, our hearts with longing. What do we long for when we see beauty? To be beautiful. We think much happiness must be connected with it. But that is an error.

General
To predict the behavior of ordinary people in advance, you only have to assume that they will always try to escape a disagreeable situation with the smallest possible expenditure of intelligence.

Faith
Faith: not wanting to know what is true.