http://www.endeavoracademy.com/journal/baruchdespinoza.htm

God acts merely according to his own laws and is compelled by no one.That infinite things must follow from the mere necessity of divine nature, or what is the same thing, by the mere laws of divine nature, we have just shown and we have shown that nothing can be conceived without God, but that everything exists in God. Therefore, nothing outside God can exist by which he could be determined or compelled in his actions; and, therefore, God acts merely according to the laws of his nature, and is compelled by no one.
--Baruch de Spinoza