PASCAL ON ENNUI
Nothing is an unbearable to man as to be completely at rest, without passion, without business, without diversion, without employment. This is when he feels his nothingness, his deprivation, his insufficiency, his dependency, his impotence, his hollowness. Presently, and from the depth of his soul he will bring up ennui, blackness, sadness, grief, resentment, despair.
---Blaise Pascal, Pensées, 1670
Benjamin Franklin (1706-90)