Neither The True Nor The False Roots

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.

I Know That I Exist; The Question Is, What Is This 'i' That 'i' Know.

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

The Rainbow Is Such A Remarkable Phenomenon Of Nature, And Its Cause Has Been So Meticulously Sought After By Inquiring Minds Throughout The Ages, That I Could Not Choose A More Appropriate Subject For Demonstrating How, With The Method I Am Using, We Can Arrive At Knowledge Not Possessed At All By Those Whose Writings Are Available To Us.

Human Wisdom Remains Always One And The Same Although Applied To The Most Diverse Objects And It Is No More Changed By Their Diversity Than The Sunshine Is Changed By The Variety Of Objects Which It Illuminates.