Eternal youth is the concept of human physical immortality free of aging. The youth referred to is usually meant to be in contrast to the depredations of aging, rather than a specific age of the human lifespan.
So far, achieving eternal youth remains beyond the capabilities of science. However, much research is currently being conducted in the sciences of genetics which may allow manipulation of the aging process at some time in the future.
Eternal youth is common in mythology, and it remains a popular theme in fiction.
Famous quotes containing the words eternal and/or youth:
“That the world is not the embodiment of an eternal rationality can be conclusively proved by the fact that the piece of the world that we know—I mean our human reason—is not so very rational. And if it is not eternally and completely wise and rational, then the rest of the world will not be either; here the conclusion a minori ad majus, a parte ad totum applies, and does so with decisive force.”
—Friedrich Nietzsche (1844–1900)
“Where the Youth pined away with desire,
And the pale Virgin shrouded in snow,
Arise from their graves and aspire,
Where my Sun-flower wishes to go.”
—William Blake (1757–1827)