1 Words to use with trajectory

The life-process will appear, not a slow, interrupted, but substantially forward development from lower and simpler organisms to higher and more complex, with the end (if there be an end), beyond the very limits of eternity, but rather a swift creation of some of the highest forms through the first energy of the creative force, with the throwing off of ever lower and lower forms as the curve of the trajectory descends.

1 Words to use with  trajectory