a.k.a. etiquette (though that can also mean decorum), politeness

There’s “common courtesy” and then there’s the local dialect of courtesy-signals which can be hard to learn (sometimes it’s hard to even determine what the local dialect is).

Complementary virtues

Contrasting vices

Virtues possibly in tension

How to acquire or strengthen it

TBD

Notes and links

Mentioned elsewhere

Inspirational quotes

TBD