The Reader who is willing to consider the Higher Space Hypothesis
seriously, who would discover, by its aid, new and profound truths
closely related to life and conduct, should first of all endeavor to
arouse in himself a new power of perception. This he will best
accomplish by learning to discern dimensional sequences, not alone
in geometry, but in the cosmos and in the natural world. By so doing
he may erect for himself a veritable Jacob's ladder,
"Pitched between Heaven and Charing Cross."
He should accustom himself to ascend it, step by step, dimension by
dimension. Then he will learn to trust Emerson's dictum, "Nature
geometrizes," even in regions where the senses fail him, and the mind
alone leads on. Much profitable amusement is to be gained by such
exercises as follow. They are in the nature of a running up and down
the scales in order to give strength and flexibility to a new set of
mental fingers. Learning to think in terms of spaces contributes to
our emancipation from the tyranny of space.