His science is one, simple and indivisible, but to adjust it to our intelligence we must first divide it into acts or instants, the more so that the created things that are its object are subordinated among themselves, follow each other in succession and are linked together. The first instant is: after God communicated ad intra or within himself, he found it worthy of his goodness to communicate himself ad extra, i.e. outwardly, by sharing his divinity and perfections with creatures in whom he would find, besides, his delights. In the second instant he decreed to execute this communication for the external glory which he would derive from the manifestation of his greatness. In the third instant he determined the order in which this communication would occur, so that the most beautiful harmony would glimmer between all his creatures.