century, and adopted by Veitia in the eighteenth, both competent Aztec
scholars.[1] They translate Quetzalcoatl as "the admirable twin," and
though their notion that this refers to Thomas Didymus, the Apostle, does
not meet my views, I believe they were right in their etymology. The
reference is to the duplicate nature of the Light-God as seen in the
setting and rising sun, the sun of to-day and yesterday, the same yet
different. This has its parallels in many other mythologies.[2]

[Footnote 1: Becerra, _Felicidad de Méjico_, 1685, quoted in Veitia,
_Historia del Origen de las Gentes que poblaron la América Septentrional_,
cap. XIX.]

[Footnote 2: In the Egyptian "Book of the Dead," Ra, the Sun-God, says, "I
am a soul and its twins," or, "My soul is becoming two twins." "This means
that the soul of the sun-god is one, but, now that it is born again, it
divides into two principal forms. Ra was worshipped at An, under his two
prominent manifestations, as Tum the primal god, or more definitely, god
of the sun at evening, and as Harmachis, god of the new sun, the sun at
dawn." Tiele, _History of the Egyptian Religion_, p. 80.]

The correctness of this supposition seems to be shown by a prevailing
superstition among the Aztecs about twins, and which strikingly
illustrates the uniformity of mythological conceptions throughout the
world. All readers are familiar with the twins Romulus and Remus in Roman
story, one of whom was fated to destroy their grandfather Amulius; with
Edipus and Telephos, whose father Laios, was warned that his death would
be by one of his children; with Theseus and Peirithoos, the former
destined to cause the suicide of his father Aigeus; and with many more
such myths. They can be traced, without room for doubt, back to simple
expressions of the fact that the morning and the evening of the one day