Spectre or specter usually refers to a ghost or other apparition. It may also refer to an optical illusion called a Brocken spectre.

It may also refer to:

https://en.wikipedia.org/wiki/Spectre

"I wanted very much to learn to draw, for a reason that I kept to myself: I wanted to convey an emotion I have about the beauty of the world."
Richard Feynman
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