Only in The History of Astronomy (written before 1758) Smith speaks of the invisible hand, to which ignorants refer to explain natural phenomena otherwise unexplainable: Fire burns, and water refreshes; heavy bodies descend, and lighter substances fly upwards, by the necessity of their own nature; nor was the invisible hand of Jupiter ever apprehended to be employed in those matters.
Hanya dalam Sejarah Astronomi (ditulis sebelum tahun 1758) Smith berbicara tentang tangan tak terlihat, yang merujuk pada fenomena alam yang tidak dapat dijelaskan: Fire burns, and water refreshes; heavy bodies descend, and lighter substances fly upwards, by the necessity of their own nature; nor was the invisible hand of Jupiter ever apprehended to be employed in those matters.