Date: 1686, 1689, 1697

"No less inquisitive have they been about the first Principle of Life, which sets the Wheels of this curious Engine on Work."

— Nourse, Timothy (c.1636–1699)

Date: 1690, 1694, 1695, 1700, 1706

"For, though he that contemplates the Operations of his Mind, cannot but have plain and clear Ideas of them; yet unless he turn his Thoughts that way, and considers them attentively, he will no more have clear and distinct Ideas of all the Operations of his Mind, and all that may be observed ther...

— Locke, John (1632-1704)

Date: 1690, 1694, 1695, 1700, 1706

"By which way one may prove any thing, and it is but supposing that all watches, whilst the balance beats, think; and it is sufficiently proved, and past doubt, that my watch thought all last night."

— Locke, John (1632-1704)

Date: 1691

"Thirdly, Let us hence duly learn to prize and value our Souls; is the Body such a rare Piece, what this is the Soul? the Body is but the Husk or Shell, the Soul is the Kernel; the Body is but the Cask, the Soul the precious Liquor contained in it; the Body is but the Cabinet; the Soul the Jewel;...

— Ray [formerly Wray], John (1627–1705)

Date: 1696

"Imagine two clocks or watches which agree perfectly ... Put now the soul and the body in place of these two clocks; their accordance may be brought about by one of these three ways."

— Leibniz, Gottfried Wilhelm (1646-1716)