A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal.
~ Oscar Wilde

A wit should no more be sincere, than a woman constant; one argues a decay of parts, as to other of beauty.
~ William Congreve

Can there be greater foolishness than the respect you pay to people collectively when you despise them individually?
~ Marcus T. Cicero

Candor gives wings to strength.
~ Motto

Every man alone is sincere. At the entrance of a second person, hypocrisy begins.
~ Ralph Waldo Emerson

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!
~ Tennessee Williams

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.
~ Henry David Thoreau

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.
~ Henry David Thoreau

It doesn't matter what you believe just so long as you're sincere.
~ Charles M. Schultz

It is best to be yourself, imperial, plain and true.
~ Robert Browning

It is dangerous to be sincere unless you are also stupid.
~ George Bernard Shaw

Nay, Madam, when you are declaiming, declaim; and when you are calculating, calculate.
~ Samuel Johnson

Sincerity and truth are the basis of every virtue.
~ Confucius

Sincerity gives wings to power.
~ Anonymous

Sincerity is impossible, unless it pervade the whole being, and the pretence of it saps the very foundation of character.
~ James Russell Lowell

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.
~ John Tillotson

Sincerity is not a spontaneous flower nor is modesty either.
~ Sidonie Gabrielle Colette

Sincerity is the highest complement you can pay,
~ Ralph Waldo Emerson

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.
~ Ralph Waldo Emerson

Sincerity makes the very least person to be of more value than the most talented hypocrite.
~ Charles Haddon Spurgeon