1888 to 1893
In 1888 he took a drafting job with the firm of Adler and Sullivan where he worked directly under Louis Sullivan for six years. Sullivan was one of the few influences Wright ever acknowledged. Sullivan, known for his integrated ornamentation based on natural themes, developed the maxim "Form Follows Function" which Wright later revised to "Form and Function Are One." Sullivan also believed in an American architecture based on American themes not on tradition or European styles -- an idea that Wright was later to develop. Wright and Sullivan abruptly parted company in 1893 when Sullivan discovered that Wright had been accepting commissions for "bootleg" house designs on his own, a violation of an earlier agreement between the two. Many years later, the two renewed their friendship. Wright often referred to Sullivan as his "Lieber Meister," or beloved master.