Fortitude

In fact, an artist lacking in confidence and fortitude would lose focus after 2 or 3 hours.

I admire your fortitude.

The rungs of the ladder were reportedly replaced with dull knives in order to train one's fortitude.

You can't even imagine how much fortitude it requires.

Tales of gentleness, of honor, of justice, of courage, of fortitude in suffering, of intrepidity in danger, of dauntless resolution, of iron will, inspire children to an emulation of those virtues.

In the present war between the United States and Spain, the Queen Regent is an impressive figure, and it is entirely owing to her charm and fortitude that the present dynasty of Spain is maintained.

The beautiful simplicity and naivete of the man’s character, the mean circumstances in which his life was cast, the fortitude, industry, and manliness with which he triumphed over his difficulties—these things explain much that seems at first sight futile in his art and colour even his worst failures with a glow of purely human sympathy.

I am able now (me thinkes) / (Out of a Fortitude of Soule, I feele) / To endure more Miſeries, […]

I shall soon have need for all my fortitude, as I am on the point of separation from my own daughter.

She [the ship] may be saved by your efforts, by your resource and fortitude bearing up against the heavy weight of guilt and failure.