Everything That Is Possible Demands To Exist.

If You Have A Clear Idea Of A Soul, You Will Have A Clear Idea Of A Form; For It Is Of The Same Genus, Though A Different Species.

Every Present State Of A Simple Substance Is The Natural Consequence Of Its Preceding State, In Such A Way That Its Present Is Big With Its Future.

All The Different Classes Of Beings Which Taken Together Make Up The Universe Are, In The Ideas Of God Who Knows Distinctly Their Essential Gradations, Only So Many Ordinates Of A Single Curve So Closely United That It Would Be Impossible To Place Others Between Any Two Of Them, Since That Would Imply Disorder And Imperfection. Thus Men Are Linked With The Animals, These With The Plants And These With The Fossils Which In Turn Merge With Those Bodies Which Our Senses And Our Imagination Represent To Us As Absolutely Inanimate.

Music Is The Pleasure The Human Mind Experiences From Counting Without Being Aware That It Is Counting.

And There Must Be Simple Substances, Because There Are Compounds; For The Compound Is Nothing But A Collection Or Aggregatum Of Simples.