You will see this clearer, if you think of the endurance of habit.

'As the twig is bent, the tree's inclined,' is a trite saying that aptly illustrates the subject about which we are now conversing.

If the mind were not a substance and a form, how could it receive and retain impressions ?" "True." "And to advance a step further--if the mind have form, what is that form ?" "The human form, if any," was the answer.
"Yes.

And of this truth the minds of all men have a vague perception.

A cruel man is called a human monster.