"As, from the center of the lamp of day, / Beams after beams-diffusive sweetly play" so flows sweet joy from "the passions of the generous mind" 
The Passions of Man. A Poem. In Four Epistles
At least 2 entries in ECCO and ESTC (1746, 1747).<br>
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James Ruffhead, <u>The Passions of Man. A Poem. In Four Epistles</u> (London: Printed for the Author, 1746). &lt;<a href="http://find.galegroup.com/ecco/infomark.do?&source=gale&prodId=ECCO&userGroupName=viva_uva&tabID=T001&docId=CW116315481&type=multipage&contentSet=ECCOArticles&version=1.0&docLevel=FASCIMILE">Link to ECCO</a>&gt; 