We shall acquire an empire over our bodies, and may succeed in making even our reflex notions conscious.
"Shelley, Godwin and Their Circle" by H. N. Brailsford
The acquiring of mental images seems to be essentially the same process as the acquiring of conditioned reflexes, and of names.
"Psychology" by Robert S. Woodworth
Habits are really acquired reflex actions.
"A Civic Biology" by George William Hunter