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Quotation from The Sceptical Chymist by Robert Boyle
“if men would more carefully distinguish those things that they know, from those that they ignore or do but think”
The Sceptical Chymist, Physiological Considerations, Part of the First Dialogue (1661 first edition, Project Gutenberg text)
The opening of the dialogue, where Boyle explains why he speaks so irresolutely about the elements.
Citation: "if men would more carefully distinguish those things that they know, from those that they ignore or do but think" — Robert Boyle, The Sceptical Chymist, Physiological Considerations, Part of the First Dialogue (1661 first edition, Project Gutenberg text). (id boyle-the-sceptical-chymist-q2)
Portrait: The Shannon Portrait of the Hon Robert Boyle, Johann Kerseboom, Public domain.
