He Lives Well Who Is Well Hidden.

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 Two Operations Of Our Understanding, Intuition And Deduction, On Which Alone We Have Said We Must Rely In The Acquisition Of Knowledge.

The Only Thing We Have Power Over In The Universe Is Our Own Thoughts.

How Do We Know That Anything Really Exists, That Anything Is Really The Way It Seems Ot Us Through Our Senses?

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.