Plain Facts for Old and Young by John Harvey Kellogg

5. Do not despair of ever recovering from the effects of past

transgression, and plunge into greater depths of sin. Persevering, skillful treatment will cure almost every case. Even the worst cases can be greatly benefited if the earnest co-operation of the patient can be secured. This is indispensable, and the patient should be so instructed at the outset of a course of treatment.