“Know how to behave with others. Knowing how to understand their needs, wants and expectations is the art of winning people's hearts and minds.”
Related quotes

“We learn history not in order to know how to behave or how to succeed, but to know who we are.”
"The Idolatry of Politics", U.S. Jefferson Lecture speech (1986)

Go Rin No Sho (1645), The Water Book

“You gotta know how to get to people's heart”
Pop Chronicles: Show 15 - The Soul Reformation I: A symposium on soul http://digital.library.unt.edu/ark:/67531/metadc19764/m1/, interview recorded 1.2.1968 http://web.archive.org/web/20110615153027/http://www.library.unt.edu/music/special-collections/john-gilliland/o-s.

“We never understand how little we need in this world until we know the loss of it.”
Source: Margaret Ogilvy (1897), Ch. 8