“The task of the real intellectual consists of analyzing illusions in order to discover their causes.”

Die Zeit http://www.zeit.de/2004/18/Deutschland_2fSchmidt_18?page=all, nr. 18/2004, 22. April 2004

Rules for the Direction of the Mind: X.379
As quoted in [Clarke, Desmond M., 2006, Descartes : a Biography, Cambridge Press, 67, ISBN 978-0-521-82301-2]

Source: Against Method: Outline of an Anarchistic Theory of Knowledge

The Precession of Simulcra, The Hyperreal and the Imaginary
1980s, Simulacra and Simulation (1981)

Source: The Moral Judgment of the Child (1932), Ch. 2 : Adult Constraint and Moral Realism <!-- p. 166 -->
Context: One must have felt a real desire to exchange thoughts with others in order to discover all that a lie can involve. And this interchange of thoughts is from the first not possible between adults and children, because the initial inequality is too great and the child tries to imitate the adult and at the same time to protect himself against him rather than really to exchange thoughts with him. The situation we have described is thus almost the necessary outcome of unilateral respect. The spirit of the command having failed to be assimilated, the letter alone remains. Hence the phenomenon we have been observing. The child thinks of a lie as "what isn't true," independently of the subject's intentions. He even goes so far as to compare lies to those linguistic taboos, "naughty words." As for the judgment of responsibility, the further a lie is removed from reality, the more serious is the offense. Objective responsibility is thus the inevitable result of unilateral respect in its earliest stage.

Source: Echoes from the Bottomless Well (1985), p. 16

“The Evitable Conflict”, p. 187
I, Robot (1950)

1950s, Loving Your Enemies (November 1957)
Context: How do you go about loving your enemies? I think the first thing is this: In order to love your enemies, you must begin by analyzing self. And I’m sure that seems strange to you, that I start out telling you this morning that you love your enemies by beginning with a look at self. It seems to me that that is the first and foremost way to come to an adequate discovery to the how of this situation. … some people aren’t going to like you. They’re going to dislike you, not because of something that you’ve done to them, but because of various jealous reactions and other reactions that are so prevalent in human nature. But after looking at these things and admitting these things, we must face the fact that an individual might dislike us because of something that we’ve done deep down in the past, some personality attribute that we possess, something that we’ve done deep down in the past and we’ve forgotten about it; but it was that something that aroused the hate response within the individual. That is why I say, begin with yourself. There might be something within you that arouses the tragic hate response in the other individual.

As quoted in Famous Actors and Actresses on the American Stage (1975) by William C. Young, p. 885
Context: Acting is illusion, as much illusion as magic is — and not so much a matter of being real. I mean, I would probably shock Lee Strasberg.