Some people can go a little overboard here, prioritizing niceness at the expense of other virtues, so be sure to seek out the golden mean. Niceness can be cloying if it seems forced or insincere (or overwhelming or presumptious).

Complementary virtues

Contrasting vices

Virtues possibly in tension

How to acquire or strengthen it

TBD

Notes and links

Mentioned elsewhere

TBD

Inspirational quotes

TBD