Self-Control and Fidelity^{*1902, Testimonies for the Church 7:199-202.}

We have no right to overtax either the mental or the physical powers so that we are easily excited and led to speak words which dishonor God. The Lord desires us to be always calm and forbearing. Whatever others may do, we are to represent Christ, doing as He would do under similar circumstances.3TT 183.1

Every day one in a position of trust has decisions to make on which depend results of great importance. He has often to think rapidly, and this can be done successfully only by those who practice strict temperance. The mind strengthens under the correct treatment of the physical and the mental powers. If the strain is not too great, it acquires new vigor with every taxation.3TT 183.2

None but a wholehearted Christian can be a true gentleman.3TT 183.3

A neglect to conform in every particular to God's requirements means certain failure and loss to the wrongdoer. Failing to keep the way of the Lord, he robs his Maker of the service that is His due. This reacts upon himself; he fails of gaining that grace, that power, that force of character, which it is the privilege of each to receive who surrenders all to God. Living apart from Christ, he is exposed to temptation. He makes mistakes in his work for the Master. Untrue to principle in little things, he fails of doing God's will in things greater. He acts on the principles to which he has accustomed himself.3TT 183.4

God cannot connect with those who live to please themselves, to make themselves first. Those who do this will in the end be last of all. The sin that is most nearly hopeless and incurable is pride of opinion, self-conceit. This stands in the way of all growth. When a man has defects of character, yet fails of realizing this; when he is so imbued with self-sufficiency that he cannot see his fault, how can he be cleansed? “They that be whole need not a physician, but they that are sick.” Matthew 9:12. How can one improve when he thinks his ways are perfect?3TT 183.5

When one who is supposed to be led and taught by God turns out of the way, because of self-confidence, many follow his example. His false step may result in misleading thousands.3TT 184.1