It is not necessary for a preacher to express all his thoughts in one sermon. A preacher should have three principles: first, to make a good beginning, and not spend time with many words before coming to the point; secondly, to say that which belongs to the subject in chief, and avoid strange and foreign thoughts; thirdly, to stop at the proper time.
Martin LutherIt is a good thing to let prayer be the first business in the morning and the last in the evening. Guard yourself against such false and deceitful thoughts that keep whispering, "Wait a while. In an hour or so I will pray. I must first finish this or that." Thinking such thoughts we get away from prayer into other things that will hold us and involve us till the prayer of the day comes to naught.
Martin LutherIt is certainly true that reason is the most important and the highest rank among all things and, in comparison with other things of this life, the best and something divine. It is the inventor and mentor of all the arts, medicines, laws, and of whatever wisdom, power, virtue, and glory men possess in this life.
Martin Luther