Science Is Practical Philosophy.

There Is A Difference Between Happiness, The Supreme Good, And The Final End Or Goal Toward Which Our Actions Ought To Tend. For Happiness Is Not The Supreme Good, But Presupposes It, Being The Contentment Or Satisfaction Of The Mind Which Results From Possessing It.

Archimedes, That He Might Transport The Entire Globe ... Demanded Only A Point That Was Firm And Immovable; So Also, I Shall Be Entitled To Entertain The Highest Expectations, If I Am Fortunate Enough To Discover Only One Thing That Is Certain And Indubitable.

The Object Of Music Is A Sound. The End; To Delight, And Move Various Affections In Us.

If You Would Be A Real Seeker After Truth, It Is Necessary That At Least Once In Your Life You Doubt, As Far As Possible, All Things.

Mathematics Is A More Powerful Instrument Of Knowledge Than Any Other That Has Been Bequeathed To Us By Human Agency.