"Someone ought to stand with a hammer at the door of every happy contented man, continually banging on it to remind him that there are unhappy people around and that however happy he may be at the time, sooner or later life will show him its claws and disaster will overtake him in the form of illness, poverty, bereavement and there will be no one to see or hear him."
- Anton Chekov, "Gooseberries"