“The Master said, “The gentleman understands what is right, whereas the petty man understands profit.”
(Analects 4.16)”
Help us to complete the source, original and additional information
Confucius 269
Chinese teacher, editor, politician, and philosopher -551–-479 BCRelated quotes

“Man masters nature not by force, but by understanding”
Source: All and Everything: Meetings with Remarkable Men (1963)

“It is not the hand but the understanding of a man that may be said to write.”
Book III, Author's Preface
Don Quixote de la Mancha (1605–1615), Part II (1615), Book III
“I’m not a gentleman, I’m a nobleman, a distinction I suspect you understand very well.”
Source: Devil's Bride

Dissertation for doctor of philosophy in christian education (May 25, 1991)

2000s
Source: [I, Isaac, Take Thee, Rebekah: Moving from Romance to Lasting Love, 2005, 9781418515812, http://books.google.com/books?id=lhWCB2v3UlQC&pg=PA43&dq=%22Unless+I+understand+the+Cross%22, 43]