Illusion Two independent observers, looking at the same thing, never see the same thing. They just call it the same, as a matter of consensus. Objective reality is an illusion.
Optical illusion While young, we tend to think that life is endless and full of opportunities. It takes getting old to realize how big of an illusion that is.
Illusion Whenever you think that it could have been better, don’t kid yourself: it couldn’t, it is just an illusion.