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
light into the peace and safety of a new dark age.