When it comes to money, where we feel our clear interest,
we have an entire art where the tester uses many means to discover the worth...
just as we give great attention to judging things that might steer us badly.
But when it comes to our own ruling principle,
we yawn and doze off, accepting any appearance that flashes by without counting to cost.
—Epictetus, Discourses, 1.20.8:11(resource) The Daily Stoic: 366 Meditations on Wisdom