„Everybody in the world is seeking happiness—and there is one sure way to find it. That is by controlling your thoughts. Happiness doesn't depend on outward conditions. It depends on inner conditions.“

Source: How to Win Friends and Influence People

Last update May 22, 2020. History
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Dale Carnegie97
American writer and lecturer 1888 - 1955

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Dale Carnegie photo

„Remember happiness doesn't depend upon who you are or what you have; it depends solely on what you think.“

—  Dale Carnegie American writer and lecturer 1888 - 1955

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.

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„Science depends on outer experiment. Spirituality depends on inner searching and seeking.“

—  Sri Chinmoy Indian writer and guru 1931 - 2007

Songs of the Soul (1971)
Context: Science depends on outer experiment. Spirituality depends on inner searching and seeking. A scientist discovers the power that very often threatens even his own life. A spiritual seeker discovers the power that guides and moulds his life into a life of divine fulfilment.

Marcus Aurelius photo

„The happiness of your life depends upon the quality of your thoughts; therefore guard accordingly.“

—  Marcus Aurelius, book Meditations

Variant: The happiness of your life depends upon the quality of your thoughts.
Source: Meditations

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„Your success and happiness depend on your willingness to help others solve their problems.“

—  T. B. Joshua Nigerian Christian leader 1963

On the secret of success - "TB Joshua Sends Pastor Chris Member To School" https://archive.is/20130628101340/www.allvoices.com/contributed-news/3995918-tb-joshua-sends-pastor-chris-member-to-school All Voices (August 25 2009)

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„Staying as I am, one foot in one country and the other in another, I find my condition very happy, in that it is free.“

—  René Descartes French philosopher, mathematician, and scientist 1596 - 1650

Me tenant comme je suis, un pied dans un pays et l’autre en un autre, je trouve ma condition très heureuse, en ce qu’elle est libre.
Letter to Elisabeth of Bohemia, Princess Palatine (Paris, June/July 1648)

Tulsidas photo

„In dependence, there is no happiness, even in a dream.“

—  Tulsidas Hindu poet-saint 1532 - 1623

Quoted in "A Garden of Deeds: Ramacharitmanas, a Message of Human Ethics" which principle Mahatma Gandhi adopted to give a national leadership motto, in P.7

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„Happiness depends upon ourselves.“

—  Rhonda Byrne Australian writer and producer 1951

The Secret Daily Teachings

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„Happiness depends upon ourselves“

—  Aristotle Classical Greek philosopher, student of Plato and founder of Western philosophy -384 - -321 BC

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

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„Love is the condition in which the happiness of another person is essential to your own.“

—  Robert A. Heinlein, book Stranger in a Strange Land

"Jubal Harshaw" in the first edition (1961); the later 1991 "Uncut" edition didn't have this line, because it was one Heinlein had added when he went through and trimmed the originally submitted manuscript on which the "Uncut" edition is based. Heinlein also later used a variant of this in The Cat Who Walks Through Walls where he has Xia quote Harshaw: "Dr. Harshaw says that 'the word "love" designates a subjective condition in which the welfare and happiness of another person are essential to one's own happiness.'"
Source: Stranger in a Strange Land (1961; 1991)

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„He who depends on chances and situations to be happy, is a Sansari.“

—  Chinmayananda Saraswati Indian spiritual teacher 1916 - 1993

Quotations from Gurudev’s teachings, Chinmya Mission Chicago

„Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Etiam egestas wisi a erat. Morbi imperdiet, mauris ac auctor dictum.“