"Every word that fell from his lips is more precious than all the treasures of the earth; for his 'are the words of eternal life!' They must therefore be laid up in your heart, and constantly referred to on all occasions, as the rule and direction of all your actions."
Letters on the Improvement of the Mind, Addressed to a Lady
At least 32 entries in ESTC (1773, 1774, 1775, 1777, 1778, 1783, 1786, 1787, 1790, 1793, 1797, 1800).<br> 
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See Hester Chapone, <u>Letters on the Improvement of the Mind, Addressed to a Lady</u>, 2 vols. (London: Printed by H. Hughs for J. Walter, 1773). &lt;<a href="http://find.galegroup.com/ecco/infomark.do?&contentSet=ECCOArticles&type=multipage&tabID=T001&prodId=ECCO&docId=CW114742139&source=gale&userGroupName=viva_uva&version=1.0&docLevel=FASCIMILE">Link to ECCO</a>&gt; &lt;<a href="http://books.google.com/books?id=_a1bAAAAQAAJ">Vol. 1 in Google Books</a>&gt;&lt;<a href="http://www.gutenberg.org/files/35890/35890-h/35890-h.htm">Project Gutenberg Edition</a>&gt;