Illusory Joy Is Often Worth More Than

Even If I Were To Suppose That I Was Dreaming And Whatever I Saw Or Imagined Was False, Yet I Could Not Deny That Ideas Were Truly In My Mind.

Because Reason...is The Only Thing That Makes Us Men, And Distinguishes Us From The Beasts, I Would Prefer To Believe That It Exists, In Its Entirety, In Each Of Us.

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

What Then Is The Source Of My Errors? They Are Owing Simply To The Fact That, Since The Will Extends Further Than The Intellect, I Do Not Contain The Will Within The Same Boundaries; Rather, I Also Extend It To Things I Do Not Understand. Because The Will Is Indifferent In Regard To Such Matters, It Easily Turns Away From The True And The Good; And In This Way I Am Deceived And I Sin.

Whatever I Have Up Till Now Accepted As Most True And Assured I Have Gotten Either From The Senses Or Through The Senses. But From Time To Time I Have Found That The Senses Deceive, And It Is Prudent Never To Trust Completely Those Who Have Deceived Us Even Once.