“The calm man, having learned how to govern himself, knows how to adapt himself to others; and they, in turn, reverence his spiritual strength, and feel that they can learn of him and rely upon him. The more tranquil a man becomes, the greater is his success, his influence, his power for good.”

"The Tragedy of the Moon," The Magazine of Fantasy and Science Fiction (July 1972)
General sources

Sec. 119
Some Thoughts Concerning Education (1693)

Essay 1, Section 11
On the Genealogy of Morality (1887)
Context: To be incapable of taking one's enemies, one's accidents, even one's misdeeds seriously for very long—that is the sign of strong, full natures in whom there is an excess of the power to form, to mold, to recuperate and to forget[... ] Such a man shakes off with a single shrug many vermin that eat deep into others; here alone genuine 'love of one's enemies' is possible—supposing it to be possible at all on earth. How much reverence has a noble man for his enemies!—and such reverence is a bridge to love.—For he desires his enemy for himself, as his mark of distinction; he can endure no other enemy than one in whom there is nothing to despise and very much to honor!

Source: "Investment in human capital," 1961, p. 2; As cited in: David L. Levinson (2005) Community Colleges: A Reference Handbook, p. 156
Context: The mere thought of investment in human beings is offensive to some among us. Our values and beliefs inhibit us from looking upon human beings as capital goods, except in slavery, and this we abhor... To treat human beings as wealth that can be augmented by investment runs counter to deeply held values. It seems to reduce man once again to a mere material component, something akin to property. And for man to look upon himself as a capital good, even if it did not impair his freedom, may seem to debase him... (But) by investing in themselves, people can enlarge the range of choice available to them. It is one way free men can enhance their welfare.

Golo Mann in his Recollections, quoted in: Marcel Reich-Ranicki (1989), Thomas Mann and his family, p. 187.

Emile, or On Education (1762), Book II

8 September 1833. As quoted in: Maurice York and Rick Spaulding (2008): Ralph Waldo Emerson – The the Infinitude of the Private Man: A Biography. https://books.google.de/books?id=_pRMlDQavQwC&pg=PA240&dq=A+man+contains+all+that+is+needful+to+his+government+within+himself&hl=de&sa=X&ved=0ahUKEwiahO73qqfeAhUwpIsKHRqzDswQ6AEIQDAD#v=onepage&q=A%20man%20contains%20all%20that%20is%20needful%20to%20his%20government%20within%20himself&f=false Chicago and Raleigh: Wrighwood Press, pages 240 – 241. Derived from: Edward Waldo Emerson and Waldo Emerson Forbes (1909): Journals of Ralph Waldo Emerson, with annotations, III, pages 200-201.
1820s, Journals (1822–1863)
Context: A man contains all that is needful to his government within himself. He is made a law unto himself. All real good or evil that can befal [sic] him must be from himself. He only can do himself any good or any harm. Nothing can be given to him or can taken from him but always there is a compensation.. There is a correspondence between the human soul and everything that exists in the world; more properly, everything that is known to man. Instead of studying things without the principles of them, all may be penetrated unto with him. Every act puts the agent in a new position. The purpose of life seems to be to acquaint a man with himself. He is not to live the future as described to him but to live the real future to the real present. The highest revelation is that God is in every man.

Source: Just Folks (1917), There Are No Gods, final stanza.