"I think we'll be able to populate this world with men, but we won't live to see it."
To survive on the pond covered world humans converted themselves to a life underwater with no memories of who they used to be
Back to the beginning
"The panatropes make adaptations, not gods. They take human germ-cells—in this case, our own, since our bank was wiped out in the crash—and modify them toward creatures who can live in any reasonable environment. The result will be manlike and intelligent. It usually shows the donor's personality pattern, too.
"But we can't transmit memory. The adapted man is worse than a child in his new environment. He has no history, no techniques, no precedents, not even a language.
The Books of Ancient Knowledge
"While the panatropes are being calibrated, the rest of us can put our heads together on leaving a record for these people. We'll micro-engrave the record on a set of corrosion-proof metal leaves, of a size our colonists can handle conveniently. Some day they may puzzle it out."
Creation Day
"We know that in this universe there is logically no place for man," the gleaming now immobile cylinder upon the table droned abruptly. "Our memory is the common property to all our races. It reaches back to a time when there were no such creatures as men here. It remembers also that once upon a day there were men here, suddenly, and in some numbers. Their spores littered the bottom; we found the spores only a short time after our season's Awakening, and in them we saw the forms of men slumbering.
"Our strange ally, Man, was like nothing else in this universe. He was and is ill-fitted for it. He does not belong here; he has been—adopted. This drives us to think that there are other universes besides this one, but where these universes might lie, and what their properties might be, it is impossible to imagine. We have no imagination, as men know."
And so, men using their imagination built a "space ship" to discover new water ponds. Their adventures had just begun
Enjoy!