Science Is Practical Philosophy.

In God There Is An Infinitude Of Things Which I Cannot Comprehend, Nor Possibly Even Reach In Any Way By Thought; For It Is The Nature Of The Infinite That My Nature, Which Is Finite And Limited, Should Not Comprehend It.

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

If We Possessed A Thorough Knowledge Of All The Parts Of The Seed Of Any Animal (e.g. Man), We Could From That Alone, Be Reasons Entirely Mathematical And Certain, Deduce The Whole Conformation And Figure Of Each Of Its Members, And, Conversely If We Knew Several Peculiarities Of This Conformation, We Would From Those Deduce The Nature Of Its Seed.

Even Those Who Have The Weakest Souls Could Acquire Absolute Mastery Over All Their Passions If We Employed Sufficient Ingenuity In Training And Guiding Them.

But I Cannot Forget That, At Other Times I Have Been Deceived In Sleep By Similar Illusions; And, Attentively Considering Those Cases, I Perceive So Clearly That There Exist No Certain Marks By Which The State Of Waking Can Ever Be Distinguished From Sleep, That I Feel Greatly Astonished; And In Amazement I Almost Persuade Myself That I Am Now Dreaming.