“Happiness depends upon ourselves.”
The Secret Daily Teachings
An interpretative gloss of Aristotle's position in Nicomachean Ethics book 1 section 9, tacitly inserted by J. A. K. Thomson in his English translation The Ethics of Aristotle (1955). The original Greek at Book I 1099b.29 http://perseus.uchicago.edu/perseus-cgi/citequery3.pl?dbname=GreekFeb2011&getid=0&query=Arist.%20Eth.%20Nic.%201099b.25, reads ὁμολογούμενα δὲ ταῦτ’ ἂν εἴη καὶ τοῖς ἐν ἀρχῇ, which W. D. Ross translates fairly literally as [a]nd this will be found to agree with what we said at the outset. Thomson's much freer translation renders the same passage thus: [t]he conclusion that happiness depends upon ourselves is in harmony with what I said in the first of these lectures; the words "that happiness depends upon ourselves" were added by Thomson to clarify what "the conclusion" is, but they do not appear in the original Greek of Aristotle. Rackham's earlier English translation added a similar gloss, but averted confusion by confining it to a footnote.
Disputed
Variant: Happiness depends upon ourselves
Source: See http://www.mikrosapoplous.gr/aristotle/nicom1b.htm#I9 for the original Greek and Ross's translation; Thomson's translation can be viewed on Google Books https://books.google.com/books?id=9SFrNWmO654C&dq=%22happiness+depends+upon+ourselves%22+aristotle&focus=searchwithinvolume&q=%22happiness+depends+upon+ourselves%22+.
Source: Rackham's translation of this passage is available here http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0054%3Abook%3D1%3Achapter%3D9%3Asection%3D8
“Happiness depends upon ourselves.”
The Secret Daily Teachings
As quoted in Plenty of Time to Sleep When You're Dead : A Compilation of Life-changing Quotes (2006) by Richard Caridi
As quoted in Sprituality in a Materialistic World (2008) by Leslie Klein
Variant: Remember happiness doesn't depend on who you are or what you have; it depends solely upon what you think.
As quoted in Don't Try to Live Your Life in One Day! (2008) by Johnny Ong, p. 171
“The happiness of your life depends upon the quality of your thoughts; therefore guard accordingly.”
Variant: The happiness of your life depends upon the quality of your thoughts.
Source: Meditations
Speech of 1877-06-24
1870s
“All happiness or unhappiness solely depends upon the quality of the object to which we are attached by love.”
Tota felicitas aut infelicitas in hoc solo sita est; videlicet in qualitate obiecti, cui adhaeremus amore.
I, 9; translation by W. Hale White (Revised by Amelia Hutchison Stirling)
On the Improvement of the Understanding (1662)
Letter to William Cabell (6 May 1783)
Chap. III.
The Theory of Moral Sentiments (1759), Part III
Context: When the happiness or misery of others depends in any respect upon our conduct, we dare not, as self–love might suggest to us, prefer the interest of one to that of many. The man within immediately calls to us, that we value ourselves too much and other people too little, and that, by doing so, we render ourselves the proper object of the contempt and indignation of our brethren. Neither is this sentiment confined to men of extraordinary magnanimity and virtue. It is deeply impressed upon every tolerably good soldier, who feels that he would become the scorn of his companions, if he could be supposed capable of shrinking from danger, or of hesitating, either to expose or to throw away his life, when the good of the service required it.