The world of Nature, for every man, is the Fantasy of Himself.
 Thomas Carlyle, On Heroes, Hero-Worship, and The Heroic in History (1841). copy citation

Context

“I said, The earnest man, speaking to his brother men, must always have stated what seemed to him a fact, a real Appearance of Nature. But the way in which such Appearance or fact shaped itself,—what sort of fact it became for him,—was and is modified by his own laws of thinking; deep, subtle, but universal, ever-operating laws. The world of Nature, for every man, is the Fantasy of Himself. This world is the multiplex "Image of his own Dream." Who knows to what unnamable subtleties of spiritual law all these Pagan Fables owe their shape! The number Twelve, divisiblest of all, which could be halved, quartered, parted into three, into six, the most remarkable number,—this was enough to determine the Signs of the Zodiac, the number of Odin's Sons, and innumerable other Twelves.” source