A mind that questions everything, unless strong enough to bear the weight of its ignorance, risks questioning itself and being engulfed in doubt. If it cannot discover the claims to existence of the objects of its questioning—and it would be miraculous if it so soon succeeded in solving so many mysteries—it will deny them all reality, the mere formulation of the problem already implying an inclination to negative solutions. But in so doing it will become void of all positive content and, finding nothing which offers it resistance, will launch itself perforce into the emptiness of inner revery.
Emile Durkheim (1858–1917), French sociologist. Suicide, bk. 2, ch. 6, sct. 1 (1897, trans. 1951).