Which writer wrote in 1900's that the White House would one day “be adorned by a downright moron”?

Henry Louis Mencken, known for most of his life as ‘H.L. Mencken’, (September 12, 1880 – January 29, 1956) was born in Baltimore, Maryland to Anna Margaret (Abhau) and August Mencken, Sr., a cigar factory owner. He was of German ancestry and spoke German in his childhood. He was known as the "Sage of Baltimore" and the "American Nietzsche". He is often regarded as one of the most influential American writers of the early 20th century.

H. L. Mencken wrote in an article, “Bayard vs. Lionheart” for The Evening Sun, Baltimore (26 July 1920), that “As democracy is perfected, the office of President represents, more and more closely, the inner soul of the people. On some great and glorious day, the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron.”

The quotation is an example of Mencken’s forthright style, apparent in all of his writings as a journalist, essayist, satirist, humourist, literary critic and scholar of language. He was a fearlessly controversial thinker who would never shrink from expressing views at odds with convention. In his writings he liked nothing better than unsettling orthodoxy and conventional wisdom and stirring controversy. The last thing he wanted to do was to court popularity.

Mencken’s literary output was prodigious and quotes from it are legion, encompassing politics, religion, music, literature, art, science, philosophy and social conventions.