Even Those Who Have The Weakest Souls

It Is Not Enough To Have A Good Mind. The Main Thing Is To Use It Well.

The Reading Of All Good Books Is Like A Conversation With The Finest Minds Of Past Centuries.

This Result Could Have Been Achieved Either By His [god] Endowing My Intellect With A Clear And Distinct Perception Of Everything About Which I Would Ever Deliberate, Or Simply By Impressing The Following Rule So Firmly Upon My Memory That I Could Never Forget It: I Should Never Judge Anything That I Do Not Clearly And Distinctly Understand.

I Am Thinking, Therefore I Exist. (...) I Was A Substance Whose Whole Essence Or Nature Is Solely To Think, And Which Does Not Require Any Place, Or Depend On Any Material Thing, In Order To Exist. Accordingly This 'i' - That Is, The Soul By Which I Am What I Am - Is Entirely Distinct From The Body, And Indeed Is Easier To Know Than The Body, And Would Not Fail To Be Whatever It Is, Even If The Body Did Not Exist.

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