Since a commutative zero is the inverse of any additive identity, it must be unique when it exists.

So many Scotch and even Glasgow goods, and above all the old fusty warehousy smell, put me very much in mind of Candleriggs Street.

−2 * −2 = +4 (minus 2 times minus 2 equals plus four)

“What is this shithole?” General Villa was disgusted with his accommodations.