Sincerity Is Moral Truth.

The Discoverer And The Poet Are Inventors; And They Are So Because Their Mental Vision Detects The Unapparent, Unsuspected Facts, Almost As Vividly As Ocular Vision Rests On The Apparent And Familiar.

Science As We Now Understand The Word Is Of Later Birth. If Its Germinal Origin May Be Traced To The Early Period When Observation, Induction, And Deduction Were First Employed, Its Birth Must Be Referred To That Comparatively Recent Period When The Mind, Rejecting The Primitive Tendency To Seek In Supernatural Agencies For An Explanation Of All External Phenomena, Endeavoured, By A Systematic Investigation Of The Phenomena Themselves To Discover Their Invariable Order And Connection.

If The Members Of A Class Do Not Understand -- If Those Directly Addressed Fail To Listen, Or Listening, Fail To Recognize A Power In The Voice -- Surely The Fault Lies With The Speaker, Who, Having Attempted To Secure Their Attention And Enlighten Their Understandings, Has Failed In The Attempt.

A Man Must Be Himself Convinced If He Is To Convince Others. The Prophet Must Be His Own Disciple, Or He Will Make None. Enthusiasm Is Contagious: Belief Creates Belief.

Roger Bacon, A Disciple Of The Arabs, Also Insisted On The Primary Necessity Of Mathematics, Without Which No Other Science Can Be Known; Yet By Mathematics It Is Clear That He Meant Something Very Different From What We Mean, Including Under That Head Even Dancing, Singing, Gesticulation, And Performance On Musical Instruments.