An artist will betray himself by some sort of sincerity.

Most affectations conceal something eventually, even though they don't in the beginning.

…he who seeks to deceive will always find someone who will allow himself to be deceived.

The intention of never deceiving often exposes us to deception.

When we undertake to deceive others intentionally, we communicate messages meant to mislead them, meant to make them believe what we ourselves do not believe. We can do so through gesture, through disguise, by means of action or inaction, even through silence.

bad cause seldom fails to betray itself.

I don’t say it was deliberate fraud. He was probably madly sincere, and sincerely mad.

It is fraud in law if a party makes representations which he knows to be false, and injury ensues, although the motives from which the representations proceeded may not have been bad.

Ambition prompted many to become deceitful; to keep one thing concealed in the breast, and another ready on the tongue; to estimate friendships and enmities, not by their worth, but according to interest; and to carry rather a specious countenance than an honest heart.

A fool is twice a fool who tries to conceal it.

To betray at the right time means to foresee.

One who deceives will always find those who allow themselves to be deceived.

Persons who disguise themselves when they go out into the world rarely do so for innocent purposes. At best, they mean to pull some merry prank; all too often, they intend a considerably deeper mischief.

Watch people, because you can fake for a long time, but one day you're gonna show yourself to be a phony.