Knowing Thyself, That Is The Greatest Wisdom.

What Ever The Course Of Our Lives, We Should Recieve Them As The Highest Gift From The Hand Of God, In Which Equally Reposed The Power To Do Nothing Whatever For Us. Indeed, We Should Accept Misfortune Not Only In Thanks, But In Infinite Gratitude To Providence, Which By Such Means Detaches Us From An Excessive Love For Earthly Things And Elevates Our Minds To The Celestial And Divine.

The Deeper I Go In Considering The Vanities Of Popular Reasoning, The Lighter And More Foolish I Find Them. What Greater Stupidity Can Be Imagined Than That Of Calling Jewels, Silver, And Gold "precious," And Earth And Soil "base"?

The Laws Of Nature Are Written By The Hand Of God In The Language Of Mathematics.

Names And Attributes Must Be Accommodated To The Essence Of Things, And Not The Essence To The Names, Since Things Come First And Names Afterwards.

The Grand Duke [of Tuscany] ...after Observing The Medicaean Plants Several Times With Me ... Has Now Invited Me To Attach Myself To Him With The Annual Salary Of One Thousand Florins, And With The Title Of Philosopher And Principal Mathematicial To His Highness; Without The Duties Of Office To Perform, But With The Most Complete Leisure; So That I Can Complete My Treatises.