One more word.. Instruct Carol more absolutely on the claims, methods and evils of Malicious Animal Magnetism. You must work, watch and exhort and rebuke on this question until you get him clear as to his own impulses, to know whence they come and whither tend. You, I have taught to guard incessantly this vulnerable human point of weakness that darkens the tablet of mortal mind. Oh, be vigilant on this question. Mary Baker Eddy (Letters of Mary Baker Eddy to Augusta E, Stetson, p.24)