“Open the pod bay doors, Hal.”

“Good morning, Dr. Chandra. This is Hal. I am ready for my first lesson.”

“Could we go into your room?" she asked. "I knew it. I knew it," he said, spinning around and sliding quickly toward his door. "It's finally happend, just like in dreams. An intelligent, beautiful woman is going to declare her undying affection”

“Pero nadie pensaba que llegaría muy lejos, porque ni siquiera creo que fuera capaz de integrar e elevado a x.- ¿Es posible tal ignorancia? - preguntó alguien con asombro.- Puede que esté exagerando. Digamos x por e elevado a x.”

“Science can destroy religion by ignoring it as well as by disproving its tenets. No one ever demonstrated, so far as I am aware, the nonexistence of Zeus or Thor, but they have few followers now.”

“Perhaps it is better to be un-sane and happy, than sane and un-happy. But it is the best of all to be sane and happy. Whether our descendants can achieve that goal will be the greatest challenge of the future. Indeed, it may well decide whether we have any future.”

“There was nothing left of Earth. They had leeched away the last atoms of its substance. It had nourished them, through the fierce moments of their inconceivable metamorphosis, as the food stored in a grain of wheat feeds the infant plant while it climbs towards the Sun.”