1. mettle - Noun
2. mettle - Adjective
Substance or quality of temperament; spirit, esp. as regards honor, courage, fortitude, ardor, etc.; disposition; -- usually in a good sense.
Source: Webster's dictionaryYou who live your lives in cities or among peaceful ways cannot always tell whether your friends are the kind who would go through fire for you. But on the Plains one's friends have an opportunity to prove their mettle. Buffalo Bill
I find the Englishman to be him of all men who stands firmest in his shoes. They have in themselves what they value in their horses, - mettle and bottom. Ralph Waldo Emerson
The unprecedented leap the Negro made when freed from the oppressing withes of bondage is more than deserving of a high place in history. It can never be chronicled. The world needs to know of what mettle these people are built. Booker T. Washington
To busy oneself with what is futile when one can do something useful, to attend to what is simple when one has the mettle to attempt what is difficult, is to strip talent of its dignity. José Martí
Shooting space garbage is no test of a warriors mettle. Klingon Proverb
Mettle is dangerous in a blind horse. Latin Proverb