An Optimist May See A Light Where

It Is Contrary To Reasoning To Say That There Is A Vacuum Or Space In Which There Is Absolutely Nothing.

Doubt Is The Origin Of Wisdom

The Greatest Minds Are Capable Of The Greatest Vices As Well As Of The Greatest Virtues.

These Long Chains Of Perfectly Simple And Easy Reasonings By Means Of Which Geometers Are Accustomed To Carry Out Their Most Difficult Demonstrations Had Led Me To Fancy That Everything That Can Fall Under Human Knowledge Forms A Similar Sequence; And That So Long As We Avoid Accepting As True What Is Not So, And Always Preserve The Right Order Of Deduction Of One Thing From Another, There Can Be Nothing Too Remote To Be Reached In The End, Or To Well Hidden To Be Discovered.

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.