What Is Is What Must Be.

Men Act Like Brutes In So Far As The Sequences Of Their Perceptions Arise Through The Principle Of Memory Only, Like Those Empirical Physicians Who Have Mere Practice Without Theory.

It Is Necessary To Believe That The Mixture Of Evil Has Produced The Greatest Possible Good: Otherwise The Evil Would Not Have Been Permitted.

God Makes Nothing Without Order, And Everything That Forms Itself Develops Imperceptibly Out Of Small Parts.

Now, As There Is An Infinity Of Possible Universes In The Ideas Of God, And As Only One Of Them Can Exist, There Must Be A Sufficient Reason For God's Choice, Which Determines Him Toward One Rather Than Another. And This Reason Can Be Found Only In The Fitness, Or The Degrees Of Perfection, That These Worlds Contain, Since Each Possible Thing Has The Right To Claim Existence In Proportion To The Perfection It Involves.

There Are Also Two Kinds Of Truths: Truth Of Reasoning And Truths Of Fact.