Ambition all by itself
Melville worries that his ambition will fail, that his picture of the whale will “remain unpainted at the last.” He is always aware he’s always on the verge of the whole thing breaking down, but the ambition is there. Beating underneath. It acts as the will to will it onward, the drive to make it work, a promise to try to do something great, the stakes that are high enough to make it worth while even if the whole thing fails.
Ambition, all by itself, makes the work a thing of value.
Put it this way: If I read a single poem and it’s no good, all I can say, I think, is it’s no good. If I read Louis Zukofsky’s “A” and I hate it, at least I can say he was trying to do something important.
Read the complete essay, Trying to do something, @ TheThe.