Blushing is the color of virtue.
Discourse on virtue and they pass by in droves. Whistle and dance the shimmy, and you've got an audience.
One ought to seek out virtue for its own sake, without being influenced by fear or hope, or by any external influence. Moreover, that in that does happiness consist.
As a matter of self-preservation, a man needs good friends or ardent enemies, for the former instruct him and the latter take him to task.