Jenkins tried to say goodbye, but he could not say goodbye. If he could only weep, he thought, but robots could not weep. - Clifford D. Simak

He knew that there was death—that there must be death if there were evolution, that death was one of the mechanisms that biologically spelled progress and advancement for evolutionary species.

And death was a soft thing, soft and black, cool and sweet and gracious. He slipped into it as a swimmer slips into the surf and it closed over him and held him and he felt the pulse and beat of it and knew the vastness and sureness of it.

If mankind were to continue in other than the present barbarism, a new path must be found, a new civilization based on some other method than technology.