It is difficulties that show what men are.
That which does not kill us makes us stronger.
Difficulties strengthen the mind, as labor does the body.
Kites rise highest against the wind, not with it.
I will seize fate by the throat; it shall certainly never wholly overcome me.
There is no better teacher than adversity. Every defeat, every heartbreak, every loss, contains its own seed, its own lesson on how to improve your performance next time.
The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy.