Most people see the world as a threatening place, and, because they do, the world turns out, indeed, to be a threatening place

"Those who don't return become a part of the clouds, a part of the animals that hide in the ravines and of the water that comes from the earth. They become part of everything...they become the Soul of the World.

...

Most people see the world as a threatening place, and, because they do, the world turns out, indeed, to be a threatening place"

-- The Alchemist, Paulo Coelho