In case you think I am simply using the teaching of philosophers to make light of the trails of poverty, which no one feels to be a burden unless he thinks it that, first consider that by far the greater proportion of men are poor, but you will not see them looking at all more gloomy and anxious than the rich. In fact, I rather suspect that they are happier in proportion as their minds have less to harry them.

—Seneca, On the Shortness of Life: Life Is Long if You Know How to Use It