A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal.
A wit should no more be sincere, than a woman constant; one argues a decay of parts, as to other of beauty.
Can there be greater foolishness than the respect you pay to people collectively when you despise them individually?
Candor gives wings to strength.
Every man alone is sincere. At the entrance of a second person, hypocrisy begins.
Everyone says he's sincere, but everyone isn't sincere. If everyone was sincere who says he's sincere there wouldn't be half so many insincere ones in the world and there would be lots, lots, lots more really sincere ones!
I only desire sincere relations with the worthiest of my acquaintance, that they may give me an opportunity once in a year to speak the truth.
I sat at a table where were rich food and wine in abundance, and obsequious attendance, but sincerity and truth were not; and I went away hungry from the inhospitable board.
It doesn't matter what you believe just so long as you're sincere.
It is best to be yourself, imperial, plain and true.
It is dangerous to be sincere unless you are also stupid.
Nay, Madam, when you are declaiming, declaim; and when you are calculating, calculate.
Sincerity and truth are the basis of every virtue.
Sincerity gives wings to power.
Sincerity is impossible, unless it pervade the whole being, and the pretence of it saps the very foundation of character.
Sincerity is like traveling on a plain, beaten road, which commonly brings a man sooner to his journey's end than by-ways, in which men often lose themselves.
Sincerity is not a spontaneous flower nor is modesty either.
Sincerity is the highest complement you can pay,
Sincerity is the luxury allowed, like diadems and authority, only to the highest rank. Every man alone is sincere. At the entrance of a second person, hypocrisy begins.
Sincerity makes the very least person to be of more value than the most talented hypocrite.