God's relation to spirits is not like that of a craftsman to his work, but also like that of a prince to his subjects.
Gottfried LeibnizThus God alone is the primary Unity, or original simple substance, from which all monads, created and derived, are produced.
Gottfried LeibnizThese principles have given me a way of explaining naturally the union or rather the mutual agreement [conformitรฉ] 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.
Gottfried LeibnizReality cannot be found except in One single source, because of the interconnection of all things with one another. I maintain also that substances, whether material or immaterial, cannot be conceived in their bare essence without any activity, activity being of the essence of substance in general.
Gottfried Leibniz