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The law of floatation was not discovered by contemplating the sinking of things, but by contemplating the floating of things which floated naturally, and then intelligently asking why they did so.

Thomas Troward (2007). “The Edinburgh and Dore Lectures on Mental Science”, p.69, Cosimo, Inc.
The law of floatation was not discovered by contemplating the sinking of things, but by contemplating the floating of things which floated naturally, and then intelligently asking why they did so.