He goes on from year to year doing his miracles, and has become very rich.

He pretends to no religious helps, no supernatural aids, but thinks there is something in his make-up which inspires the confidence of his patients, and that it is this confidence which does the work, and not some mysterious power issuing from himself.
Within the last quarter of a century, in America, several sects of curers have appeared under various names and have done notable things in the way of healing ailments without the use of medicines.

There are the Mind Cure the Faith Cure, the Prayer Cure, the Mental Science Cure, and the Christian-Science Cure; and apparently they all do their miracles with the same old, powerful instrument--the patient's imagination.
Differing names, but no difference in the process.

But they do not give that instrument the credit; each sect claims that its way differs from the ways of the others.
They all achieve some cures, there is no question about it; and the Faith Cure and the Prayer Cure probably do no harm when they do no good, since they do not forbid the patient to help out the cure with medicines if he wants to; but the others bar medicines, and claim ability to cure every conceivable human ailment through the application of their mental forces alone.

There would seem to be an element of danger here.