Early in this century an eminent physicist discovered a new kind of radiation, and others confirmed his work. The radiation turned out to be totally imaginary, proving that believing can be seeing. p. 168
Maxwell is said to have observed in an introductory lecture on light: "There are two theories of the nature of light, the corpuscle theory and the wave theory; we used to believe in the corpuscle theory; now we believe in the wave theory because all those who believed in the corpuscle theory have died." p. 175
Irving M. Klotz, The N-Ray Affair, Scientific American Vol. 242, May 1980.