One sits uncomfortably on a too comfortable cushion.
Fashions in sin change.
People always sound so proud when they announce they know nothing of music.
It's a sad day when you find out that it's not accident or time or fortune, but just yourself that kept things from you.
Styles in wit change so.
If you believe, as the Greeks did, that man is at the mercy of the gods, then you write tragedy. The end is inevitable from the beginning. But if you believe that man can solve his own problems and is at nobody's mercy, then you will probably write melodrama.