"When a man is sober he is ashamed of what seems all right when he is drunk. In these words we have the essential underlying cause prompting men to resort to stupefiers. People resort to them either to escape feeling ashamed after having done something contrary to their consciences, or to bring themselves beforehand into a state in which they can commit actions contrary to conscience, but to which their animal nature prompts them.

A man when sober is ashamed to go after a prostitute, ashamed to steal, ashamed to kill. A drunken man is ashamed of none of these things, and therefore if a man wishes to do something his conscience condemns he stupefies himself."

- Tolstoy (from the article)