
The Greeks sum up their ideas of moral philosophy with 4 virtues: Wisdom, Courage, Moderation, and Justice. With the military being a major part of Greek culture, it comes as no surprise that courage, being able to face a situation without cowardice, was valued.
So yeah, courage is a thing, but so is acrophobia--a morbid fear of heights ( a word with Greek roots, by the way). According to Plato, "Courage is knowing what not to fear", so I'm quite glad that I decided to pretend that I didn't have an issue with falling, confront my fears--and find out that I actually love ziplining.