For The Truth Of The Conclusions Of

Observation And Theory Get On Best When They Are Mixed Together, Both Helping One Another In The Pursuit Of Truth. It Is A Good Rule Not To Put Overmuch Confidence In A Theory Until It Has Been Confirmed By Observation. I Hope I Shall Not Shock The Experimental Physicists Too Much If I Add That It Is Also A Good Rule Not To Put Overmuch Confidence In The Observational Results That Are Put Forward Until They Have Been Confirmed By Theory.

The Physical World Is Entirely Abstract And Without Actuality Apart From Its Linkage To Consciousness.

Man Is Slightly Nearer To The Atom Than To The Star. ... From His Central Position Man Can Survey The Grandest Works Of Nature With The Astronomer, Or The Minutest Works With The Physicist. ... [k]nowledge Of The Stars Leads Through The Atom; And Important Knowledge Of The Atom Has Been Reached Through The Stars.

Never Accept A Fact Until It Has Been Verified By Theory.

We Used To Think That If We Knew One, We Knew Two, Because One And One Are Two. We Are Finding That We Must Learn A Great Deal More About 'and'.