"Professor Mark Ebor, the scientist, led a double life, and the only persons who knew it were his assistant, Dr. Laidlaw, and his publishers. But a double life need not always be a bad one, and, as Dr. Laidlaw and the gratified publishers well knew, the parallel lives of this particular man were equally good, and indefinitely produced would certainly have ended in a heaven somewhere that can suitably contain such strangely opposite characteristics as his remarkable personality combined. For Mark Ebor, F.R.S., etc., etc., was that unique combination hardly ever met with in actual life, a man of science and a mystic.(...)"