These haunting ideas, disagreeable repetitions or obstinate continuances, assume an incredible variety of forms, and enter in many strange ways into life.

Monomania or the being possessed with one idea to the exclusion of others, is a form of overstrained attention, sustained by memory.

It is _enforced_.
Mere repetition of anything to almost anybody, will produce remarkable results; or a kind of Hypnotism Causing the patient to yield to what becomes an irresistible power.

Thus it is said that perpetual dropping will wear away stones.

Dr.JAMES R.COCKE in his "Hypnotism," in illustrating this, speaks of a man who did not want to sign a note, he knew that it was folly to do so, but yielded from having been "over persuaded." I have read a story in which a man was thus simply _talked_ into sacrificing his property.