A goal is not always meant to be reached, it often serves simply as something to aim at.
By all means marry; if you get a good wife, you'll be happy. If you get a bad one, you'll become a philosopher.
I decided that it was not wisdom that enabled poets to write their poetry, but a kind of instinct or inspiration, such as you find in seers and prophets who deliver all their sublime messages without knowing in the least what they mean.