Sándor Márai said this quote

It’s the moment when something happens not just deep among the trees but also in the dark interior of the human heart, for the heart, too, has its night and its wild surges, as strong an instinct for the hunt as a wolf or a stag. The human night is filled with the crouching forms of dreams, desires, vanities, self-interest, mad love, envy, and the thirst for revenge, as the desert night conceals the puma, the hawk and the jackal.