[17] Ibid. "Timæus," p. 302. "All that arises, arises necessarily from some cause; for it is impossible for anything to come into being without cause." [Tr.'s add.]
[18] "This especially would seem to be the first principle: that nothing arises without cause, but [everything] according to preceding causes." [Tr.'s add.]
[19] "We think we understand a thing perfectly, whenever we think we know the cause by which the thing is, that it is really the cause of that thing, and that the thing cannot possibly be otherwise." [Tr.'s add.]
[20] Lib. iv. c. 1.
[21] "Now it is common to all principles, that they are the first thing through which [anything] is, or arises, or is understood." [Tr.'s add.]
[22] "There are four causes: first, the essence of a thing itself; second, the sine qua non of a thing; third, what first put a thing in motion; fourth, to what purpose or end a thing is tending." [Tr.'s add.]
[23] "Suarii disputationes metaph." Disp. 12, sect. 2 et 3.
[24] Hobbes, "De corpore," P. ii. c. 10, § 7.
[25] Suarez, "Disp." 12, sect. 1.