We say little if not egged on by vanity. [Fr., On parle peu quand la vanite ne fait pas parler.]

That which makes the vanity of others unbearable to us is that which wounds our own. [Fr., Ce qui nous rend la vanite des autres insupportable, c'est qu'elle blesse la notre.]

Pride does not wish to owe and vanity does not wish to pay.

Self-love is the greatest of all flatterers.

We would rather speak ill of ourselves than not talk about ourselves at all.

Flattery is a kind of bad money, to which our vanity gives us currency.