The most merciful thing in the world, I think, is the inability of the
human mind to correlate all its contents. We live on a placid island
of ignorance in the midst of black seas of infinity, and it was not
meant that we should voyage far. The sciences, each straining in its
own direction, have hitherto harmed us little; but some day the piecing
together of dissociated knowledge will open up such terrifying vistas
of reality, and of our frightful position therein, that we shall either
go mad from the revelation or flee from the deadly light into the peace
and safety of a new dark age.
-- H.P. Lovecraft. "The Call of the Cthulhu." (1926)