Fifty years," I hackneyed, "is a long time." "Not when you're looking back at them," she said. "You wonder how they vanished so quickly. - Isaac Asimov

Él podía ser un extranjero, pero un hombre siempre es un hombre.

For a wise man, I have been told, once said, 'Gratitude is best and most effective when it does not evaporate in empty phrases.' But alas, my lady, I am but a mass of empty phrases, it would seem.

The trouble with you, Peter, is that when you think of a witness to a planetological statement, you think of planetologists. You divide up human beings into categories, and despise and dismiss most. A robot cannot do that. The First Law says, 'A robot may not injure a human being or, through inaction, allow a human being to come to harm.' Any human being. That is the essence of the robotic view of life. A robot makes no distinction. To a robot, all men are truly equal, and to a robopsychologist who must perforce deal with men at the robotic level, all men are truly equal, too.