That which the world calls day is the night of ignorance to the wise.
The Bhagavad Gita says that, and it is right. This scripture
means that when all creatures are living in the illusion of darkness,
the sage sees things as they really are, and awakes to that vision,
praising the perfection.
Conversely, what the world calls “day” (or “bright” or “real”) is
an illusion…the “night of ignorance”…to the wise person
who sees how pointless and worthless the shiny stuff
of life that most people seek truly is.
Peer deeply into the darkness, then, and you will see the light.
Yet turn away from the brightness of what others call “day”,
for they mistake the bright for the good.

Neale Donald Walsch