“He that alone would wise and mighty be,
Commands that others love as well as he.”
Canto III.
Of Divine Love (c. 1686)
Context: He that alone would wise and mighty be,
Commands that others love as well as he.
Love as he lov'd! — How can we soar so high?—
He can add wings when he commands to fly.
Nor should we be with this command dismay'd;
He that examples gives will give his aid:
For he took flesh, that where his precepts fall,
His practice, as a pattern, may prevail.
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Edmund Waller 25
English poet and politician 1606–1687Related quotes

“When He tells us to love our enemies He gives, along with the command, the love itself.”
Source: The Hiding Place: The Triumphant True Story of Corrie Ten Boom

“He who knows others is wise. He who knows himself is enlightened.”

Letter to Dorothy Day (20 December 1961).
Context: Persons are not known by intellect alone, not by principles alone, but only by love. It is when we love the other, the enemy, that we obtain from God the key to an understanding of who he is, and who we are. It is only this realization that can open to us the real nature of our duty, and of right action. To shut out the person and to refuse to consider him as a person, as an other self, we resort to the impersonal "law" and to abstract "nature." That is to say we block off the reality of the other, we cut the intercommunication of our nature and his nature, and we consider only our own nature with its rights, its claims, it demands. And we justify the evil we do to our brother because he is no longer a brother, he is merely an adversary, an accused. To restore communication, to see our oneness of nature with him, and to respect his personal rights and his integrity, his worthiness of love, we have to see ourselves as similarly accused along with him … and needing, with him, the ineffable gift of grace and mercy to be saved. Then, instead of pushing him down, trying to climb out by using his head as a stepping-stone for ourselves, we help ourselves to rise by helping him to rise. For when we extend our hand to the enemy who is sinking in the abyss, God reaches out to both of us, for it is He first of all who extends our hand to the enemy. It is He who "saves himself" in the enemy, who makes use of us to recover the lost groat which is His image in our enemy.

“Happy is he that grows wise by other men's harms.”
Lexicon Tetraglotton (1660)

Second Dialogue; translated by Judith R. Bush, Christopher Kelly, Roger D. Masters
Dialogues: Rousseau Judge of Jean-Jacques (published 1782)

Napoleon : In His Own Words (1916)

Brown Penny http://poetry.poetryx.com/poems/1454/
The Green Helmet and Other Poems (1910)

So gewiß ist der allein glücklich und groß, der weder zu herrschen noch zu gehorchen braucht, um etwas zu sein!
Alternative translation: So certain is it that he alone is great and happy, who requires neither to command nor to obey, in order to secure his being of some importance in the world.
Götz von Berlichingen, Act I (1773), p. 39
Source: Goethe’s Works, vol. 3, Götz Von Berlichingen (With the Iron Hand) http://oll.libertyfund.org/index.php?option=com_staticxt&staticfile=show.php%3Ftitle=2113&layout=html#chapter_164458
Source: Beautiful thoughts from German and Spanish authors, by C. T. Ramage (1868) https://archive.org/stream/beautifulthough00unkngoog#page/n112/mode/2up