It Is Reasonable To Hope That In

When An Investigator Has Developed A Formula Which Gives A Complete Representation Of The Phenomena Within A Certain Range, He May Be Prone To Satisfaction. Would It Not Be Wiser If He Should Say 'foiled Again! I Can Find Out No More About Nature Along This Line.'

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

It Is A Primitive Form Of Thought That Things Exist Or Do Not Exist.

The Quest Of The Absolute Leads Into The Four-dimensional World.

But It Is Necessary To Insist More Strongly Than Usual That What I Am Putting Before You Is A Model-the Bohr Model Atom-because Later I Shall Take You To A Profounder Level Of Representation In Which The Electron Instead Of Being Confined To A Particular Locality Is Distributed In A Sort Of Probability Haze All Over The Atom.