how can spinoza's ethical philosophy be geometrically treated?

Answer 1

g. Finally Spinoza says in the seventh place: “God is a Being absolutely infinite, i.e. a substance consisting of infinite attributes, each of which expresses an eternal and infinite essence.” Does substance, one might here ask, possess an infinite number of attributes? But as with Spinoza there are only two attributes, thought and extension, with which he invests God, “infinite” is not to be taken here in the sense of the indeterminate but positively, as a circle is perfect infinity in itself.

http://www.marxists.org/reference/archive/hegel/works/hp/hpspinoz.htm

http://www.marxists.org/reference/subject/philosophy/works/ne/spinoza.htm

Answer 2

It can be "treated" as a rationalistic system, and therefor of very little value without corroborating evidence.