"Such principles are parts of our constitution, no less than the power of thinking: reason can neither make nor destroy them; nor can it do any thing without them: it is like a telescope, which may help a man to see farther, who hath eyes; but without eyes, a telescope shows nothing at all."
An Inquiry into the Human Mind on the Principles of Common Sense
<u>An Inquiry into the Human Mind, on the Principles of Common Sense. By Thomas Reid, D. D. Professor of Philosophy in King's College, Aberdeen</u> (Edinburgh: Printed for A. Millar and A. Kincaid & J. Bell, 1764). &lt;<a href="http://find.galegroup.com/ecco/infomark.do?&source=gale&prodId=ECCO&userGroupName=viva_uva&tabID=T001&docId=CW117422497&type=multipage&contentSet=ECCOArticles&version=1.0&docLevel=FASCIMILE">Link to ECCO</a>&gt;
The third edition is available in Google Books &lt;<a href="http://books.google.com/books?id=v-IsAAAAYAAJ">Link</a>&gt;<br>
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See also fourth edition of 1785, which serves as the copy text for Derek Brookes' critical edition published by The Pennsylvania State University Press, 1997.