...and not to yield.

"... and tho' / We are not now that strength which in old days / Moved earth and heaven; that which we are, we are; / One equal temper of heroic hearts, / Made weak by time and fate, but strong in will / To strive, to seek, to find, and not to yield." -Alfred Lord Tennyson; Ulysses

Heroes aren't born or made...

"Heroes aren't born or made, they make themselves. There are probably lots of heroes who never do anything heroic. It doesn't matter. Failing doesn't matter. What matters is trying again." -Jan Siegel; Prospero's Children