Frustration is passion in a vacuum.
When in doubt, read the last paragraph of A Moveable Feast:
There is never any ending to Paris and the memory of each person who has lived in it differs from that of any other. We always returned to it no matter who we were or how it was changed or with what difficulties, or ease, it could be reached. Paris was always worth it and you received return for whatever you brought to it. But this is how Paris was in the early days when we were very poor and very happy.