Authors:

If you are too fond of new remedies, first you will not cure your patients; secondly, you will have no patients to cure.

The Lectures on the Principles and Practice of Surgery with Additional Notes and Cases by Frederick Tyrell, Vol. 2. Thomas and George Underwood, London (1824) (Description of the first ligation of the aorta in (1817) for left femoral aneurysm)
If you are too fond of new remedies, first you will not cure your patients; secondly, you will have no patients to cure.