"Man, being the servant and interpreter of Nature, can do and understand so much and so much only as he has observed i…"

"The logic now in use serves rather to fix and give stability to the errors which have their foundation in commonly re…"

"There are and can be only two ways of searching into and discovering truth. The one flies from the senses and particu…"

"Both ways set out from the senses and particulars, and rest in the highest generalities; but the difference between t…"

"There is a great difference between the Idols of the human mind and the Ideas of the divine. That is to say, between …"

"There can be no doubt that light consists of the motion of a certain substance. For if we examine its production we f…"

"[W]e offer this work as mathematical principles of philosophy. For all the difficulty of philosophy seems to consist …"

"The only immediate utility of all sciences, is to teach us, how to control and regulate future events by their causes…"

"A judgment of observation can never rank as experience, without the law, that "whenever an event is observed, it is a…"

"Those who have taken upon them to lay down the law of nature as a thing already searched out and understood, whether …"