This saying appears to be due to John Augustus Shedd; it was quoted in "Grace Hopper : The Youthful Teacher of Us All" by Henry S. Tropp in Abacus Vol. 2, Issue 1 (Fall 1984) ISSN 0724-6722 . She did repeat this saying on multiple occasions, but she called it "a motto that has stuck with me" and did not claim coinage. Additional variations and citations may be found at Quote Investigator http://quoteinvestigator.com/2013/12/09/safe-harbor/
Misattributed
“What wings are to a bird, and sails to a ship, so is prayer to the soul.”
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Corrie ten Boom 61
Dutch resistance hero and writer 1892–1983Related quotes
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 338.
“A bird is safe in its nest - but that is not what its wings are made for.”
World Peace: The Voice of a Mountain Bird (2014) https://books.google.co.uk/books?id=KkYtBgAAQBAJ,
“Every ship is a romantic object, except that we sail in.”
1840s, Essays: Second Series (1844), Experience
“Like ships, that sailed for sunny isles,
But never came to shore.”
The Devil's Progress (1849)
“I'm not afraid of storms, for I'm learning how to sail my ship.”
Amy, in Ch. 44 : My Lord and Lady
Variant: I am not afraid of storms for I am learning how to sail my ship.
Source: Little Women (1868)