One can promise actions, but not feelings, for the latter are involuntary. He who promises to love forever or hate forever or be forever faithful to someone is promising something that is not in his power.
Friedrich NietzscheThe most spiritual men, as the strongest, find their happiness where others would find their destruction: in the labyrinth, in hardness against themselves and others, in experiments. Their joy is self-conquest: asceticism becomes in them nature, need, and instinct. Difficult tasks are a privilege to them; to play with burdens that crush others, a recreation. Knowledge-a form of asceticism. They are the most venerable kind of man: that does not preclude their being the most cheerful and the kindliest.
Friedrich NietzscheDid you ever say yes to a pleasure? oh my friends, then you also said yes to all pain. all things are linked, entwined, in love with one another.
Friedrich NietzscheThe empty, the one, the unmoved, the full, satiation, wanting nothing--that would be my evil: in short, dreamless sleep.
Friedrich Nietzsche