Opposition creates choice. Pragmatic or artistic? Harmonious or chaotic? Gray-shaded or colorful? One is free to look on whichever side. Actually we are not that free as we must experience both sides to get to know what is the bright one. To be born is the same as passing through a double door leading to a double world.

Experiencing this duality allows us to understand that the true world is just not one of them. The worlds we know are only the worlds we choose to live in. To "die" means to get rid of this bounded illusion called "free will", and to get in touch with the truth.

But then the ultimate paradox arises: we need many lives to finally realize that the wheel of time is only an illusion. We experience time when there is a motion, but we completely forget the notion of time as a reference frame when there is emotion.

"The radiometer (AKA light-mill) was invented by the English physicist Sir William Crookes. It consists of a set of vanes reflective on one side and blackened on the other and mounted on a sensitively balanced spindle in a partially evacuated vessel. When exposed to light, the blackened sides become warmer and repel air molecules from the surface. Since the reflective sides have no effect whatsoever, the slight difference in air pressure created causes the vanes to rotate."