Seems to be useful in coping with stress. Can be learned. Has been the subject of numerous studies, e.g. Maddi, S.R. “The story of hardiness: Twenty years of theorizing, research, and practice” (2007).

Complementary virtues

Contrasting vices

TBD

Virtues possibly in tension

TBD

How to acquire or strengthen it

TBD

Notes and links

TBD

Mentioned elsewhere

TBD

Inspirational quotes

TBD