If once a man indulges himself in murder, very soon he comes to think little of robbing; and from robbing he comes next to drinking and Sabbath-breaking, and from that to incivility and procrastination.
Thomas de QuinceyNobody will laugh long who deals much with opium: its pleasures even are of a grave and solemn complexion.
Thomas de QuinceyNo man will ever unfold the capacities of his own intellect who does not at least checker his life with solitude.
Thomas de Quincey