The Scientific Imagination Always Restrains

To Say That An Idea Is Necessary Is Simply To Affirm That We Cannot Conceive The Contrary; And The Fact That We Cannot Conceive The Contrary Of Any Belief May Be A Presumption, But Is Certainly No Proof, Of Its Truth.

In Matters Of The Intellect, Do Not Pretend That Conclusions Are Certain Which Are Not Demonstrated Or Demonstrable. That I Take To Be The Agnostic Faith, Which If A Man Keep Whole And Undefiled, He Shall Not Be Ashamed To Look The Universe In The Face, Whatever The Future May Have In Store For Him.

If A Man Cannot Do Brain Work Without Stimulants Of Any Kind, He Had Better Turn To Hand Work It Is An Indication On Nature's Part That She Did Not Mean Him To Be A Head Worker.

Every Great Advance In Natural Knowledge Has Involved The Absolute Rejection Of Authority.

A World Of Facts Lies Outside And Beyond The World Of Words.