If a man thinks that somewhat is a duty, which is no duty, and then sorrow for omitting it, such sorrow is all too much, because it is undue, and caused by error. Many I have known who have been greatly troubled, because they could not bring themselves to that length or order of meditation, for which they had neither ability nor time; and many, because they could not reprove sin in others, when prudent instruction and intimation was more suitable than reproof.