The gods looked with favor on superior courage.
Tacitus, Histories. iv. 17
Wikipedia has some good quotes and explanations here on courage, but I’m more interested in the root of the word.
Seemingly it comes from the old Anglo-French word (c. 1300) curage, the word coer meaning heart. They spell it coeur in modern French.
The word means a lot more than just being brave, either physically or morally. It’s acting from, or with, the heart.