Sincerity is a certain openness of heart. It is to be found in very few, and what we commonly look upon to be so is only a cunningsort of dissimulation, to insinuate ourselves into the confidence of others.
What really pleases the Spiritual Master is our intent and the quality of our character.
In my adult life I've understood that if I put an enormous amount of love and honesty into something, usually that shows in the end.
You've a good heart. Sometimes that's enough to see you safe wherever you go. But mostly, it's not.
Richard Pryor had real sincere and vulnerable moments. Now it seems so cheesy if you stop your act and say, "This is why we have to help them kids. We've got to make sure them kids can read."
You're constantly, in human culture, trying to balance between uplifting, heartfelt, sincere, earnestness that empowers and enlightens people, and the sarcastic cynicism that comes from just people's acquired bitterness over experiences.