pure illusion?
You can’t, except in the lowest animal sense, be in love with a girl if you know (and keep on remembering) that all the beauties of both of her person and of her character are a momentary and accidental pattern produced by the collision of atoms, and that your own response to them is only a sort of psychic phosphorescence arising from the behaviour of our genes. You can’t go on getting very serious pleasure from music if you know and remember that its air of significance is a pure illusion, that you like it only because your nervous system is irrationally conditioned to like it.
CS Lewis