A Young Man Not Yet, An Elder

The Cause And Root Of Nearly All Evils In The Sciences Is This-that While We Falsely Admire And Extol The Powers Of The Human Mind We Neglect To Seek For Its True Helps.

Death Is A Friend Of Ours; And He That Is Not Ready To Entertain Him Is Not At Home.

Learning Hath His Infancy, When It Is But Beginning And Almost Childish; Then His Youth, When It Is Luxuriant And Juvenile; Then His Strength Of Years, When It Is Solid And Reduced; And Lastly His Old Age, When It Waxeth Dry And Exhaust.

Nor Is Mine A Trumpet Which Summons And Excites Men To Cut Each Other To Pieces With Mutual Contradictions, Or To Quarrel And Fight With One Another; But Rather To Make Peace Between Themselves, And Turning With United Forces Against The Nature Of Things

In Mathematics I Can Report No Deficiency, Except It Be That Men Do Not Sufficiently Understand The Excellent Use Of Pure Mathematics.