“We, more than others, should carry jumper and tow cables not only in our cars, but also in our hearts, by which means we can send the needed boost or charge of encouragement or the added momentum to mortal neighbors.”
Source: All These Things Shall Give Thee Experience
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Neal A. Maxwell 40
Mormon leader 1926–2004Related quotes

Reported in Christian Crusade Weekly (March 3, 1974) as having been said be Zhou to Egyptian leader Gamal Abdel Nasser in 1965; reported as a likely misattribution in Paul F. Boller, Jr., and John George, They Never Said It: A Book of Fake Quotes, Misquotes, & Misleading Attributions (1989), p. 133.
Disputed

“Why should we build our happiness on the opinons of others, when we can find it in our own hearts?”
Source: The Social Contract and Discourses

per 18 June 2014 Washington Post article https://www.washingtonpost.com/blogs/plum-line/wp/2014/06/18/hillary-minors-crossing-border-must-be-sent-home/?utm_term=.4fa77b8f5771
Interim (2013–2015)
“We all need joy, and we can all receive joy in only one way, by adding to the joy of others.”
[The end of sorrow <nowiki>[vol 1 of the Bhagavad Gita for daily living]</nowiki>, Easwaran, Eknath, w:Eknath Easwaran, 1993, Nilgiri, Tomales, CA, 9780915132171, http://books.google.com/books?id=3S4fEjh40AUC&pg=PA109&dq=%22We+all+need+joy,+and+we+can+all+receive+joy+in+only+one+way,+by+adding+to+the+joy+of+others.%22&hl=en&ei=4qmfTuKjO4LliALiucFt&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=%22We%20all%20need%20joy%2C%20and%20we%20can%20all%20receive%20joy%20in%20only%20one%20way%2C%20by%20adding%20to%20the%20joy%20of%20others.%22&f=false] (p. 109). (work originally published 1975)

Speech to the Lord Mayor's Banquet at Guildhall (11 November 1963), quoted in The Times (12 November 1963), p. 12
Prime Minister

Quoted in "The Last Battle" - Page 354 - by Cornelius Ryan - History - 1966.

The Writings of Marguerite Bourgeoys, p. 169