The line: "The greatest trick the devil ever pulled was convincing the world he didn't exist." is from which motion picture?

The character played by Kevin Spacey, Roger "Verbal" Kint says: "The greatest trick the Devil ever pulled was convincing the world he didn't exist." This line is said in the 1995 film, The Usual Suspects. It helps us to see the devil as something bad and is the friend (entity) who will not help us in the end. The devil is the primary embodiment of evil and is a spiteful, tricky, and vicious supernatural entity.

This idea as presented in the movie was first stated in the book, The Generous Gambler by Charles Pierre Baudelaire. The philosopher, Baudelaire wrote: "He complained in no way of the evil reputation under which he lived, indeed, all over the world, and he assured me that he himself was of all living beings the most interested in the destruction of Superstition, and he avowed to me that he had been afraid, relatively as to his proper power, once only, and that was on the day when he had heard a preacher, more subtle than the rest of the human herd, cry in his pulpit: 'My dear brethren, do not ever forget, when you hear the progress of lights praised, that the loveliest trick of the Devil is to persuade you that he does not exist!' "

Accordingly, the following is something you may actually in fact believe. If the devil should ever say to you, "Don't ever believe anything that I tell you; believe me."