It is as an essayist that Addison is remembered today. He began writing essays quite casually. In April 1709, his childhood friend Richard Steele started the "Tatler". Addison contributed 42 essays to the "Tatler", while Steele wrote 188. Regarding Addison's help, Steele remarked, "when I had once called him in, I could not subsist without dependence on him". The "Tatler" was discontinued on 2 January 1711. "The Spectator" began publication on 1 March of that year, and it continued – being issued daily, and achieving great popularity – until 6 December 1712. It exercised an influence over the reading public of the time, and Addison soon became the leading partner in it, contributing 274 essays out of a total of 635; Steele wrote 236. Addison also assisted Steele with "The Guardian", which began in 1713. Addison is the originator of the quote, "Reading is to the mind what exercise is to the body.” The quote can be found in Issue 147 of the "Tatler".