De Plantatione

when we have put them together, one, two, three, four, we shall find what we were doubting about; for of one and four, the number five will be found to be composed, and of two and four six are made up; the number seven, again, consists of three and four; again, according to a triple combination of one, and three, and four, the number eight is composed; also of two, and three, and four, the number nine; and the number ten is made of all the numbers together, for one, and two, and three, and four make ten.