He was a victim of museum fatigue, Enoch told himself, overwhelmed by the many pieces of the unknown scattered all about him. - Clifford D. Simak

There was a world of mutants, men and women who were more than normal men and women, persons who had certain human talents and certain human understandings which the normal men and women of the world had never known, or having known, could not utilize in their entirety, unable to use intelligently all the mighty powers which lay dormant in their brains.

It was not his fight. Not personally his fight. No more his fight than any one of them. But he had made it his. Because of Stone, because of Rand and Harriet, because of priest who’d hounded him across half the continent, he had tried to make a fight of it. And perhaps, as well, because of something undefinable, unknown to himself, unsuspected in himself—some crazy idealism, some deep-rooted sense of justice, some basic aversion to bullies and bigots and reformers.

An untold time ago, there was a well-founded perception that the human race would end and that something else must take its place.
Why must something else take its place? I cannot tell you that. There is no solid rationale for it, but the belief seemed to be that there must be a dominant race upon this planet. Before men were the dinosaurs and before the dinosaurs there were the trilobites...