To the rest of the Galaxy, if they are aware of us at all, Earth is but a pebble in the sky. To us it is home, and all the home we know. - Isaac Asimov

— Mi muerte, Daneel — prosiguió — no es importante. Ninguna muerte individual es importante entre los humanos. Todo el que muere deja tras él su trabajo y eso no muere del todo. Jamás muere enteramente mientras exista la humanidad... ¿Comprendes lo que estoy diciendo? — Sí, colega Elijah. — El trabajo de cada individuo es una contribución a la totalidad y de este modo se vuelve parte inmortal de ella. La totalidad de las vidas humanas, pasadas, presentes y futuras, forman un tapiz que existe desde hace miles de millares de años y que se ha ido haciendo cada vez más hermoso y más complicado en todo este tiempo.

Tennyson once wrote: 'He is all fault who has no fault at all.

Speech, originally, was the device whereby Man learned, imperfectly, to transmit the thoughts and emotions of his mind. By setting up arbitrary sounds and combinations of sounds to represent certain mental nuances, he developed a method of communication — but one which in its clumsiness and thick-thumbed inadequacy degenerated all the delicacy of the mind into gross and guttural signaling. — Down — down — the results can be followed; and all the suffering that humanity ever knew can be traced to the one fact that no man in the history of the Galaxy, until Hari Seldon, and very few men thereafter, could really understand one another. Every human being lived behind an impenetrable wall of choking mist within which no other but he existed. Occasionally there were the dim signals from deep within the cavern in which another man was located — so that each might grope toward the other. Yet because they did not know one another, and could not understand one another, and dared not trust one another, and felt from infancy the terrors and insecurity of that ultimate isolation — there was the hunted fear of man for man, the savage rapacity of man toward man. Feet, for tens of thousands of years, had clogged and shuffled in the mud — and held down the minds which, for an equal time, had been fit for the companionship of the stars.