“Practice himself in order persuade others.”

§ IV
1910s, At the Feet of the Master (1911)
Context: These three great crimes you must avoid, for they are fatal to all progress, because they sin against love. But not only must you thus refrain from evil; you must be active in doing good. You must be so filled with the intense desire of service that you are ever on the watch to render it to all around you — not to man alone, but even to animals and plants. You must render it in small things every day, that the habit may be formed, so that you may not miss the rare opportunity when the great thing offers itself to be done. For if you yearn to be one with God, it is not for your own sake; it is that you may be a channel through which His love may flow to reach your fellow-men.
He who is on the Path exists not for himself, but for others; he has forgotten himself, in order that he may serve them. He is as a pen in the hand of God, through which His thought may flow, and find for itself an expression down here, which without a pen it could not have. Yet at the same time he is also a living plume of fire, raying out upon the world the Divine Love which fills his heart.
The wisdom which enables you to help, the will which directs the wisdom, the love which inspires the will — these are your qualifications. Will, Wisdom and Love are the three aspects of the Logos; and you, who wish to enroll yourselves to serve Him, must show forth these aspects in the world.

Nahj al-Balagha

Source: A Way to Be Free: The Autobiography of Robert LeFevre, Volume II, (1999), p. 319

"Vivir en Sí" [To Live in Oneself] (1891)

1910s, Nobel lecture (1910)
Context: In new and wild communities where there is violence, an honest man must protect himself; and until other means of securing his safety are devised, it is both foolish and wicked to persuade him to surrender his arms while the men who are dangerous to the community retain theirs. He should not renounce the right to protect himself by his own efforts until the community is so organized that it can effectively relieve the individual of the duty of putting down violence. So it is with nations. Each nation must keep well prepared to defend itself until the establishment of some form of international police power, competent and willing to prevent violence as between nations. As things are now, such power to command peace throughout the world could best be assured by some combination between those great nations which sincerely desire peace and have no thought themselves of committing aggressions. The combination might at first be only to secure peace within certain definite limits and on certain definite conditions; but the ruler or statesman who should bring about such a combination would have earned his place in history for all time and his title to the gratitude of all mankind.

In Encyclical Letter Spe Salvi http://www.vatican.va/holy_father/benedict_xvi/encyclicals/documents/hf_ben-xvi_enc_20071130_spe-salvi_en.html (30 November 2007)
2007

Moral Influence
The Note-Books of Samuel Butler (1912), Part VI - Mind and Matter

(463).
Saint Genet, Actor and Martyr (1952)