Antoine de Saint-Exupery had a gentle nature. Consequently, his wife ruined his entire life. It never ever pays to be too gentle of nature.

Antoine de Saint-Exupéry was of weak character to the point of letting his wife make a complete shambles of his life. The moral of this story is never ever be a pushover.

Antoine de Saint Exupéry was a pushover and his wife ruined his life. So, you can't be a pushover.