What Is Is What Must Be.

There Is No Way In Which A Simple Substance Could Begin In The Course Of Nature, Since It Cannot Be Formed By Means Of Compounding.

In My Judgment An Organic Machine New To Nature Never Arises, Since It Always Contains An Infinity Of Organs So That It Can Express, In Its Own Way, The Whole Universe; Indeed, It Always Contains All Past And Present Times.

Taking Mathematics From The Beginning Of The World To The Time When Newton Lived, What He Had Done Was Much The Better Half.

These Principles Have Given Me A Way Of Explaining Naturally The Union Or Rather The Mutual Agreement [conformité] Of The Soul And The Organic Body. The Soul Follows Its Own Laws, And The Body Likewise Follows Its Own Laws; And They Agree With Each Other In Virtue Of The Pre-established Harmony Between All Substances, Since They Are All Representations Of One And The Same Universe.

In Symbols One Observes An Advantage In Discovery Which Is Greatest When They Express The Exact Nature Of A Thing Briefly And, As It Were, Picture It; Then Indeed The Labor Of Thought Is Wonderfully Diminished.