Martin Luther on Knowledge

"By God's grace, I know Satan very well. If Satan can turn God's Word upside down and pervert the Scriptures, what will he do with my words -- or the words of others?"

"Those who read and rightly understand my teaching will not start an insurrection; they have not learned that from me."

"If it were art to overcome heresy with fire, the executioners would be the most learned doctors on earth."

"By the law is the knowledge of sin , so the word of grace comes only to those who are distressed by a sense of sin and tempted to despair."

"There can be no doubt that the Virgin Mary is in heaven. How it happened we do not know."

"Religion is not 'doctrinal knowledge,' but wisdom born of personal experience."

"I know God only as he became human, so shall I have him in no other way."

"I know that a Christian should be humble, but against the Pope I am going to be proud and say to him: “You, Pope, I will not have you for my boss, for I am sure that my doctrine is divine."

"When the devil comes at night to worry me, this is what I say to him: “Devil, I have to sleep now. That is God’s commandment, for us to work by day and sleep at night.” If he keeps on nagging me and trots out my sins, then I answer: “Sweet devil, I know the whole list. But I have done even more sin which is not on your list. Write there also that I have shit in my breeches. Hang it around your neck and wipe your mouth on it.” Then, if he won’t cease to accuse me of sins, I say in contempt: “Holy Satan, pray for me.” ."

"Regarding the plan to collect my writings in volumes, I am quite cool and not at all eager about it because, roused by a Saturnian hunger, I would rather see them all devoured. For I acknowledge none of them to be really a book of mine, except perhaps the one On the Bound Will and the Catechism."

"A person must take care to exercise moderate discipline over the body and subject it to the Spirit by means of fasting, vigils, and labor. The goal is to have the body obey and conform — and not hinder — the inner person and faith. Unless it is held in check, we know it is the nature of the body to undermine faith and the inner person."

"They are splendidly built , the best food and drink are at hand, the attendants are very diligent, the physicians are learned, the beds and coverings are very clean, and the bedsteads are painted. As soon as a sick man is brought in, all his clothes are taken off in the presence of a notary and are faithfully kept for him. He is then laid in a handsomely painted bed with clean sheets. Two physicians are fetched at once. Attendants come with food and drink, served in immaculate glass vessels; these are not touched with as much as a finger but are brought on a tray."

"… my Latin and German propositions. You wonder I did not tell you of them. But I did not wish to have them widely circulated. I only intended submitting them to a few learned men for examination, and if they disapproved of them, to suppress them — or make them known through their publications, in the event of their meeting with your approval. But now they are being spread abroad and translated everywhere, which I never could have credited, so that I regret having given birth to them — not that I am unwilling to proclaim the truth manfully, for there is nothing I more ardently desire, but because this way of instructing the people is of little avail. As yet I am still uncertain as to some points, and would have gone into others more particularly, leaving some out entirely, had I foreseen all this."