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In the mean while give me leave, Sir, to insinuate, that I cannot think it effectual for determining truth, to examin the several waies by which Phænomena may be explained, unless where there can be a perfect enumeration of all those waies.

philosophical transactions of the royal society of london

A serie's of quere's propounded by Mr. Isaac Newton, to be determin'd by experiments, positively and directly concluding his new theory of light and colours; and here recommended to the industry of the lovers of experimental philosophy, as they were generously imparted to the publisher in a letter of the said Mr. Newtons of July 8.1672