The whole difficulty of philosophy seems to consist in this—from the phenomena of motions to investigate the forces of nature, and then from these forces to demonstrate the other phenomena.
Laws of motion and gravity
From 'Principia Mathematica', Preface to the First Edition
1687
Found in 1 providers: grok
Cross Reference
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"The frame of nature, and the system of the world, we are to observe by the phenomena, and not to frame by imagination."
Strange & Unusual"I shall not mingle conjectures with certainties."
Strange & Unusual"I feign no hypotheses."
Controversial"Gravity explains the motions of the planets, but it cannot explain who sets the planets in motion."
Strange & Unusual"For it is the property of true philosophy to deduce the causes of all natural effects from the simplest possible principles."
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