“The power of thought is the light of knowledge, the power of will is the energy of character, the power of heart is love. Reason, love and power of will are perfections of man.”

January 20
Variants: My books, they all have only one message: the heart's Power Of Love must replace the mind's Love Of Power. If I have the Power Of Love, then I shall claim the whole World as my own … World Peace can be achieved when the Power Of Love replaces the Love Of Power.
Cited to Chinmoy's book My Heart Shall Give A Oneness-Feast (1993)
In The Forbes Book of Business Quotations (1997) edited by Edward C. Goodman and Ted Goodman, p. 639 a similar statement has become attributed to William Ewart Gladstone, and is also cited in "The National Elementary School Principal" Vol 28 published in 1948: "We look forward to the time when the Power of Love will replace the Love of Power. Then will our world know the blessings of peace." A similar statement has also become attributed to Jimi Hendrix, though he could have been quoting or paraphrasing Chinmoy, or conceivably Gladstone: "When the power of love overcomes love of power the world will know peace."
Meditations: Food For The Soul (1970)
Variant: When the power of love divinely replaces the love of power, man will have a new name: God. Source: Sri Chinmoy (1971): My rose petals: the master's extemporaneous talks in Europe, Sri Chinmoy Centre, p. 31. Google Books link http://books.google.pt/books?id=I2pRAAAAYAAJ&q=%22+love+divinely+replaces+%22&dq=%22+love+divinely+replaces+%22&hl=pt-PT&sa=X&ei=fNb8UrPVGsTIhAeS54H4Dw&redir_esc=y.

Power of the Gospel.
Song lyrics, Fight for Your Mind (1995)

Source: Cry, The Beloved Country

The London Literary Gazette, 1824

This quote has been attributed to Hendrix on the internet, and is flatly denied to have ever been said by him, without presenting any evidence as to why, beyond such unsupported, derisive and denigrative statements such as the author rants about others making in "WHAT HENDRIX NEVER SAID : They Don't Want to Know What He Really Said and Demand a Slacker Fantasy Instead" (22 March 2010) by Michael Fairchild, at rockprophecy.com http://www.rockprophecy.com/hendrix_quotes_hoax.html. Whether or not he ever spoke them, they are very similar to those reportedly of British Prime Minister William Ewart Gladstone, quoted in The Forbes Book of Business Quotations (1997) edited by Edward C. Goodman and Ted Goodman, p. 639: "We look forward to the time when the Power of Love will replace the Love of Power. Then will our world know the blessings of peace." A similar quotation he provides of Sri Chinmoy predates any currently located source of either the Hendrix or Gladstone attributions, yet he accuses Chinmoy of simple plagiarism of Gladstone (or "Gladwell" at one point). From Chinmoy's book My Heart Shall Give A Oneness-Feast (1993) he quotes: "My books, they all have only one message: the heart's Power Of Love must replace the mind's Love Of Power. If I have the Power Of Love, then I shall claim the whole World as my own … World Peace can be achieved when the Power Of Love replaces the Love Of Power." An even earlier statement of Chinmoy is found in Meditations: Food For The Soul (1970): "When the power of love replaces the love of power, man will have a new name: God."
Disputed
Variant: When the power of love overcomes the love of power, the world will know peace.

Introduction, Z. Hanfi, trans., in The Fiery Brook (1972), p. 102
The Essence of Christianity (1841)