The human heart is like a millstone in a mill: when you put wheat under it, it turns and grinds and bruises the wheat to flour; if you put no wheat, it still grinds on, but then 'tis itself it grinds and wears away.
Martin LutherChristians fight best on their knees. Whatever good may be done is done and brought about by prayer.
Martin LutherWe ought first to know that there are no good works except those which God has commanded, even as there is no sin except that which God has forbidden.
Martin Luther