Do you know I’ve been sitting here thinking to myself: that if I didn’t believe in life, if I lost faith in the woman I love, lost faith in the order of things, were convinced in fact that everything is a damnable, and perhaps devil-ridden chaos, if I were struck by every horror of man’s disillusionment—still I should want to live and, having once tasted of the cup, I would not turn away from it till I had drained it!

…Some driveling consumptive moralists—and poets especially—often call that thirst for life base. It’s a feature of the Karamazovs it’s true, that thirst for life regardless of everything; you have it no doubt too, but why is it base? The centripetal force on our planet is still fearfully strong, Alyosha. I have a longing for life, and I go on living in spite of logic.

Fyodor Dostoevsky, “The Brothers Get Acquainted” (Chapter III, Book V, Part II), The Brothers Karamazov