"Nothing conduces so much to improve the mind, and confirm it in virtue, as being continually employed in surveying the actions of others, entering into the concerns of the virtuous, approving of their conduct, condemning vice, and showing an abhorrence at it; for the mind acquires strength by exercise, as well as the body."
Essays on the Principles of Morality and Natural Religion
At least 3 entries in ESTC (1751, 1758, 1779).<br>
<br>Lord Kames, <u>Essays on the Principles of Morality and Natural Religion: in Two Parts.</u> (Edinburgh: Printed by R. Fleming, for A. Kincaid and A. Donaldson, 1751). &lt;<a href="http://name.umdl.umich.edu/004843595.0001.000">Link to ECCO-TCP</a>&gt;