I much prefer a compliment, even if insincere, to sincere criticism.

It's nice to compliment people on what they're wearing, but don't make insincere compliments.

The difference between appreciation and flattery? That is simple. One is sincere and the other insincere. One comes from the heart out; the other from the teeth out. One is unselfish; the other selfish. One is universally admired; the other universally condemned.

A sincere compliment can be music to another’s ears" ~Tom Baker

Good merchandise, even hidden, soon finds buyers.

Next to a sincere compliment, I think I like a well-deserved and honest rebuke.