Fyodor Dostoevsky, The Brothers Karamazov, Pevear/Volokhonsky edition (Farrar, Straus, and Giroux, 1990) p. 58:

…active love is a harsh and fearful thing compared with love in dreams. Love in dreams thirsts for immediate action, quickly performed, and with everyone watching. Indeed, it will go as far as the giving even of one’s life, provided it does not take long but is soon over, as on stage, and everyone is looking on and praising. Whereas active love is labor and perseverance, and for some people, perhaps, a whole science.