A True Proposition Is A Proposition Belief

Bad Reasoning As Well As Good Reasoning Is Possible; And This Fact Is The Foundation Of The Practical Side Of Logic.

Kepler's Discovery Would Not Have Been Possible Without The Doctrine Of Conics. Now Contemporaries Of Kepler-such Penetrating Minds As Descartes And Pascal-were Abandoning The Study Of Geometry ... Because They Said It Was So Utterly Useless. There Was The Future Of The Human Race Almost Trembling In The Balance; For Had Not The Geometry Of Conic Sections Already Been Worked Out In Large Measure, And Had Their Opinion That Only Sciences Apparently Useful Ought To Be Pursued, The Nineteenth Century Would Have Had None Of Those Characters Which Distinguish It From The Ancien Régime.

Mere Imagination Would Indeed Be Mere Trifling; Only No Imagination Is Mere .

Doubt Is An Uneasy And Dissatisfied State From Which We Struggle To Free Ourselves And Pass Into The State Of Belief; While The Latter Is A Calm And Satisfactory State Which We Do Not Wish To Avoid, Or To Change To A Belief In Anything Else.

Law Is Par Excellence The Thing That Wants A Reason. Now The Only Possible Way Of Accounting For The Laws Of Nature, And For Uniformity In General, Is To Suppose Them Results Of Evolution.