37.
In spirit, there is room enough to think;
The mental realm has no material bound;
To space there is no all-confining brink,
Or wall of adamant against which clink
The thoughts of men and useless fall to ground;
Yet thoughts are things substantial as the rock,
But only tho'ts from higher source are crowned
Supreme and lasting; these, as real, knock
Against our weaker conscious being, shock on shock.