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Isaac Newton Quotes - Page 5

Impressed force is the action exerted on a body to change its state either of resting or of moving uniformly straight forward.

Impressed force is the action exerted on a body to change its state either of resting or of moving uniformly straight forward.

Isaac Newton (2004). “Isaac Newton: Philosophical Writings”, p.60, Cambridge University Press

Therefore, the causes assigned to natural effects of the same kind must be, so far as possible, the same.

Isaac Newton (2004). “Isaac Newton: Philosophical Writings”, p.87, Cambridge University Press

The Ignis Fatuus is a vapor shining without heat.

Sir Isaac Newton (2012). “Newton's Philosophy of Nature: Selections from His Writings”, p.137, Courier Corporation

I feign no hypotheses.

Isaac Newton (2004). “Isaac Newton: Philosophical Writings”, p.25, Cambridge University Press

Is not Fire a Body heated so hot as to emit Light copiously? For what else is a red hot Iron than Fire? And what else is a burning Coal than red hot Wood?

Sir Isaac Newton (1718). “Opticks: Or, A Treatise of the Reflections, Refractions, Inflections and Colours of Light. ...”, p.316