Boston College philosopher Peter Kreeft:
The common, modern misunderstanding of hypocrisy [is] not practicing what you preach. . . . Actually, we have misdefined “hypocrisy.” Hypocrisy is not the failure to practice what you preach but the failure to believe it. Hypocrisy is propaganda.
The great art critic William Hazlitt (1778-1830):
He is a hypocrite who professes what he does not believe; not he who does not practice all he wishes or approves.
The American Heritage Dictionary:
[Hypocrisy is] the practice of professing beliefs, feelings, or virtues that one does not hold or possess; falseness.
Inigo Montoya:
You keep using that word. I do not think it means what you think it means.
HT: Joe Carter