[Y]ou take your ease amid your possessions without a thought for all the misfortunes that threaten them on every side, poised any moment now to carry off the valuable spoils. But in the case of the wise man, if anyone steals his wealth, he will still leave to him all that he truly posseses; for he lives happy in the present and untroubled by what the future holds.

Seneca, ‘On the Happy Life’