All human life, we may say, consists solely of these....

“ All human life, we may say, consists solely of these two activities: (1) bringing one’s activities into harmony with conscience, or (2) hiding from oneself the indications of conscience in order to be able to continue to live as before.Some do the first, others the second. To attain the first there is but one means: moral enlightenment — the increase of light in oneself and attention to what it shows. To attain the second — to hide from oneself the indications of conscience—there are two means: one external and the other internal. The external means consists in occupations that divert one’s attention from the indications given by conscience; the internal method consists in darkening conscience itself.As a man has two ways of avoiding seeing an object that is before him: either by diverting his sight to other more striking objects, or by obstructing the sight of his own eyes—just so a man can hide from himself the indications of conscience in two ways: either by the external method of diverting his attention to various occupations, cares, amusements, or games; or by the internal method of obstructing the organ of attention itself. For people of dull, limited moral feeling, the external diversions are often quite sufficient to enable them not to perceive the indications conscience gives of the wrongness of their lives. But for morally sensitive people those means are often insufficient.The external means do not quite divert attention from the consciousness of discord between one’s life and the demands of conscience. This consciousness hampers one’s life; and in order to be able to go on living as before, people have recourse to the reliable, internal method, which is that of darkening conscience itself by poisoning the brain with stupefying substances.One is not living as conscience demands, yet lacks the strength to reshape one’s life in accord with its demands. The diversions which might distract attention from the consciousness of this discord are insufficient, or have become stale, and so—in order to be able to live on, disregarding the indications conscience gives of the wrongness of their life—people (by poisoning it temporarily) stop the activity of the organ through which conscience manifests itself, as a man by covering his eyes hides from himself what he does not wish to see. ”

Leo Tolstoy

From : Why Do Men Stupefy Themselves?: And Other Writings