A Body In Motion Tends To Stay

Plato Is My Friend, Aristotle Is My Friend, But My Greatest Friend Is Truth.

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?

The Best And Safest Way Of Philosophising Seems To Be, First To Enquire Diligently Into The Properties Of Things, And To Establish Those Properties By Experiences [experiments] And Then To Proceed Slowly To Hypotheses For The Explanation Of Them. For Hypotheses Should Be Employed Only In Explaining The Properties Of Things, But Not Assumed In Determining Them; Unless So Far As They May Furnish Experiments.

If The Ancient Churches, In Debating And Deciding The Greatest Mysteries Of Religion, Knew Nothing Of These Two Texts, I Understand Not Why We Should Be So Fond Of Them Now The Debate Is Over.

Are Not All Hypotheses Erroneous, In Which Light Is Supposed To Consist In Pression Or Motion, Propagated Through A Fluid Medium? For In All These Hypotheses The Phaenomena Of Light Have Been Hitherto Explain'd By Supposing That They Arise From New Modifications Of The Rays; Which Is An Erroneous Supposition.