There Is Nothing Without Reason.

Indeed In General I Hold That There Is Nothing Truer Than Happiness, And Nothing Happier And Sweeter Than Truth.

Although The Whole Of This Life Were Said To Be Nothing But A Dream And The Physical World Nothing But A Phantasm, I Should Call This Dream Or Phantasm Real Enough, If, Using Reason Well, We Were Never Deceived By It.

Nothing Is Accomplished All At Once, And It Is One Of My Great Maxims, And One Of The Most Completely Verified, That Nature Makes No Leaps: A Maxim Which I Have Called The Law Of Continuity.

Nothing Is More Important Than To See The Sources Of Invention Which Are, In My Opinion More Interesting Than The Inventions Themselves.

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.