Alcuin Quotes
"The Year 1000: What Life Was Like at the Turn of the First Millennium, An Englishman's World". Book by Robert Lacey and Danny Danziger (p. 57), 1999.
Letter 164 in 'Works' (1863) vol. 1, p. 438
"Hoyt's New Cyclopedia Of Practical Quotations". 1922.
Alcuin, Stephen Allott (1974). “Alcuin of York, c. A.D. 732 to 804: his life and letters”, William Sessions Limited