Henry James.

"Every man who has reached even his intellectual teens begins to suspect that life is no farce; that it is not genteel comedy even; that it flowers and fructifies on the contrary out of the profoundest tragic depths of the essential dearth in which its subject's roots are plunged. The natural inheritance of everyone who is capable of spiritual life is an unsubdued forest where the wolf howls and the obscene bird of night chatters."