I Think; Therefore I Am.

I Was Convinced That Our Beliefs Are Based Much More On Custom And Example Than On Any Certain Knowledge.

I Have Concluded The Evident Existence Of God, And That My Existence Depends Entirely On God In All The Moments Of My Life, That I Do Not Think That The Human Spirit May Know Anything With Greater Evidence And Certitude.

He Who Hid Well, Lived Well.

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.

Perfect Numbers Like Perfect Men Are Very Rare.