“Say, O brethren! Let deeds, not words, be your adorning.”
The Hidden Words
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Bahá'u'lláh 27
founder of the Bahá'í Faith 1817–1892Related quotes

“Let no one persuade you by word or deed to do or say whatever is not best for you.”
As quoted in Divine Harmony: The Life and Teachings of Pythagoras by John Strohmeier and Peter Westbrook. (1999)
The Golden Verses
Context: Many words befall men, mean and noble alike; do not be astonished by them, nor allow yourself to be constrained.
If a lie is told, bear with it gently.
But whatever I tell you, let it be done completely.
Let no one persuade you by word or deed to do or say whatever is not best for you.

“Do not let your deeds belie your words, lest when you speak in church someone may say to himself, "Why do you not practice what you preach?"”
Non confundant opera tua sermonem tuum: ne cum in Ecclesia loqueris, tacitus quilibet respondeat, cur ergo haec quae dicis, ipse non facis?
Letter 52
Letters

“Prove your words by your deeds.”
Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter XX: On practicing what you preach

Sahih Bukhari, Volume 2, Hadith 394
Sunni Hadith

Francis of Assisi, Rule of 1221, Rule 11 http://www.sacred-texts.com/chr/wosf/wosf06.htm/ - That the Brothers ought not to speak or detract, but ought to love one another.
Disputed, Preach the gospel, and if necessary, use words.

“Let silence be your general rule; or say only what is necessary and in few words.”
Golden Sayings of Epictetus
Context: Let silence be your general rule; or say only what is necessary and in few words. We shall, however, when occasion demands, enter into discourse sparingly, avoiding such common topics as gladiators, horse-races, athletes; and the perpetual talk about food and drink. Above all avoid speaking of persons, either in the way of praise or blame, or comparison. If you can, win over the conversation of your company to what it should be by your own. But if you should find yourself cut off without escape among strangers and aliens, be silent. (164).