That was the way with Man; it had always been that way. He had carried terror with him. And the thing he was afraid of had always been himself. - Clifford D. Simak

one can sometimes see, and feel, the meaning, the depth, even the love, in a quiet face, in silent, bright eyes …

Even if the barrier now should disappear and the Flowers withdraw their attention from our Earth, we still would have been shaken from the comfortable little rut which assumed that life as we know it was the only kind of life and that our road of knowledge was the only one that was broad and straight and paved.
There had been ogres in the past, by finally the ogres had been banished. The trolls and ghouls and imps and all the others of the tribe had been pushed out of our lives, for they could survive only on the misty shores of ignorance and in the land of superstition. Now, I thought, we’d know an ignorance again (but a different kind of ignorance) and superstition, too, for superstition fed upon the lack of knowledge. With this hint of another world—even if its denizens should decide not to flaunt themselves, even if we should find a way to stop them—the trolls and ghouls and goblins would be back with us again. There’d be chimney corner gossip of this other place and a frantic, desperate search to rationalize the implied horror of its vast and unknown reaches, and out of this very search would rise a horror greater than any the other world could hold. We’d be afraid, as we had been before, of the darkness that lay beyond the little circle of our campfire.

Bit by bit, as the legend unfolds, the reader gets a more accurate picture of the human race. By degrees, one gains the conviction that here is a race which can be little more than pure fantasy. It is not the kind of race which could rise from humble beginnings to the eminence of culture with which it is gifted in these tales. Its equipment is too poor.
So far it lack of stability has become apparent. Its preoccupation with a mechanical civilization rather than with a culture based on some of the sounder, more worthwhile concepts of life indicates a lack of basic character.
And now, in this tale, we learn of the limited communications which it possessed, a situation which certainly is not conducive to advancement. Man’s inability to understand and appreciate the thought and the viewpoint of another man would be a stumbling block which no amount of mechanical ability could overcome.