For happiness one needs security but joy can spring like a flower even from the cliffs of despair.
If we listened to our intellect we'd never have a love affair. We'd never have a friendship. We'd never go into business because we'd be cynical. Well that's nonsense. You've got to jump off cliffs all the time and build your wings on the way down.
From time immemorial artistic insights have been revealed to artists in their sleep and in dreams so that at all times they ardently desired them.