Omnia Apud Me Mathematica Fiunt.

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.

Everybody Thinks Himself So Well Supplied With Common Sense That Even Those Most Difficult To Please. . . Never Desire More Of It Than They Already Have.

And As It Is The Most Generous Souls Who Have Most Gratitude, It Is Those Who Have Most Pride, And Who Are Most Base And Infirm, Who Most Allow Themselves To Be Carried Away By Anger And Hatred.

If I Found Any New Truths In The Sciences, I Can Say That They Follow From, Or Depend On, Five Or Six Principal Problems Which I Succeeded In Solving And Which I Regard As So Many Battles Where The Fortunes Of War Were On My Side.

Perfect Numbers Like Perfect Men Are Very Rare.