FOOTNOTES:
[14] [Similarly, it can be demonstrated that] extension is an attribute of God, or God is an extended thing.
[16] The formal Being of things which are not modes of thought does not follow from the divine nature because of His prior knowledge of these things, but, just as ideas follow from the attribute of thought, in the same manner and with the same necessity the objects of ideas follow and are concluded from their attributes.
[17] From a letter to Henry Oldenburg (1665).