John Quincy Adams (/ˈkwɪnzi/ (listen); July 11, 1767 – February 23, 1848) was an American statesman, diplomat, lawyer, and diarist who served as the sixth president of the United States, from 1825 to 1829. He previously served as the eighth United States Secretary of State from 1817 to 1825. During his long diplomatic and political career, Adams also served as an ambassador, and as a member of the United States Senate and United States House of Representatives representing Massachusetts. During his long diplomatic and political career, Adams also served as an ambassador, and as a member of the United States Senate and United States House of Representatives representing Massachusetts. He was also influenced by the classical republican ideal of civic eloquence espoused by British philosopher David Hume. Adams adapted these classical republican ideals of public oratory to the American debate, viewing its multilevel political structure as ripe for 'the renaissance of Demosthenic eloquence.'