About Inanna, Lines 272-274.
A Hymn to Inana (23rd century BCE)
“Your race is entitled to great praise for the contribution it makes in doing the work of the world.”
1920s, The Progress of a People (1924)
Context: We are not all permitted the privilege of a university training. We can not all enter the professions. What is the great need of American citizenship? To my mind it is this, that each should take up the burden where he is. 'Do the day's work', I have said, and it should be done in the remembrance that all work is dignified. Your race is entitled to great praise for the contribution it makes in doing the work of the world.
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Calvin Coolidge 412
American politician, 30th president of the United States (i… 1872–1933Related quotes

As quoted in "Dalai Lama urges students to shape world" in The Seattle Times (15 May 2001) http://community.seattletimes.nwsource.com/archive/?date=20010515&slug=dalai15m0.
Imagination, Understanding, and the Virtue of Liberality, ch. 4

Source: Sanitary Economy (1850), p. 12

1963, Speech at Amherst College
Context: The men who create power make an indispensable contribution to the Nation's greatness, but the men who question power make a contribution just as indispensable, especially when that questioning is disinterested, for they determine whether we use power or power uses us.

http://sports.espn.go.com/espn/print?id=2083509&type=story
On his family

Source: The Courage to Create (1975), Ch. 1 : The Courage to Create, p. 12