Courage isn’t having the strength to go on. It’s going on when you don’t have the strength. Uncertain attribution, but true nevertheless.
Courage is not simply one of the virtues, but the form of every virtue at the testing point. C.S. Lewis Do not be afraid of sudden terror, nor of trouble from the wicked when it comes; for the LORD will be your confidence, and will keep your foot from being caught. Psalm 3:25-26. NKJV