“Beauty is a question of optics. All sight is illusion.”

“Our separation from each other is an optical illusion.”

“There is an optical illusion about every person we meet.”

“The straight line, a respectable optical illusion which ruins many a man.”

“Time is an optical illusion- never quite as soild or strong as we think it is”

“Biases are either “hot” (that is, produced by the agent’s motivational system) or “cold” (more similar to optical illusions).”

“In fact, the whole idea of illusion seems to make sense only if we accept the reality of the illusory experience as an experience and question only what it seems to be telling us about the outside world. Optical illusions do really hapen. What they can’t do is provide accurate measurements of the outside world. The idea of having, so to speak, two successive layers of illusion here is unworkable.”

“Ugliness is an illusion, gentlemen. Like beauty. Like color. All depends on the light. The only reality is action.”

“Human beings have a kind of optical illusion, Einstein once said. We think ourselves separate rather than part of the whole. This imprisons our affection to those few nearest us.”

“It is a beautiful and delightful sight to behold the body of the Moon.”