The teacher who is severe, critical, overbearing, heedless of others’ feelings, must expect the same spirit to be manifested toward himself. He who wishes to preserve his own dignity and self-respect must be careful not to wound needlessly the self-respect of others. This rule should be sacredly observed toward the dullest, the youngest, the most blundering students. What God intends to do with these apparently uninteresting youth, you do not know. He has, in the past, accepted persons no more promising or attractive, to do a great work for Him. His Spirit, moving upon the heart, has aroused every faculty to vigorous action. The Lord saw in those rough, unhewn stones, precious material, that would stand the test of storm and heat and pressure. God sees not as man sees. He judges not from appearance, but he searches the heart and judges righteously. CT 93.2
The teacher should ever conduct himself as a Christian gentleman. He should stand in the attitude of a friend and counselor to his pupils. If all our people—teachers, ministers, and lay members—would cultivate the spirit of Christian courtesy, they would far more readily find access to the hearts of the people; many more would be led to examine and receive the truth. When every teacher shall forget self, and feel a deep interest in the success and prosperity of his pupils, realizing that they are God's property, and that he must render an account for his influence upon their minds and characters, then we shall have a school in which angels will love to linger. Jesus will look approvingly upon the work of the teachers and will send His grace into the hearts of the students.... CT 93.3