| Martin Jr., William McChesney | (1906 - 1998) | 1 | Zitat |
| Martindell, Jackson | (1901 - 1990) | 1 | Zitat |
| Martineau, Harriet | (1802 - 1876) | 1 | Zitat |
| Marx, Eleanor | (1855 - 1898) | 1 | Zitat |
| Marx, Groucho | (1890 - 1977) | 10 | Zitate |
| Marx, Karl Heinrich | (1818 - 1883) | 16 | Zitate |
| Marx, Reinhard | (*1953) | 2 | Zitate |
| Marx, Roberto Burle | (1909 - 1994) | 2 | Zitate |
| Masaryk, Jan | (1886 - 1948) | 1 | Zitat |
| Masaryk, Tomas Garrigue | (1850 - 1937) | 4 | Zitate |
| Mascagani, Pietro | (1863 - 1945) | 1 | Zitat |
| Masefield, John | (1878 - 1967) | 1 | Zitat |
| Maslow, Abraham | (1908 - 1970) | 1 | Zitat |
| Mason, George | (1725 - 1792) | 4 | Zitate |
| Mason, Jackie | (*1936) | 3 | Zitate |
| Massillon, Jean-Baptiste | (1663 - 1742) | 1 | Zitat |
| Mastroianni, Marcello | (1924 - 1996) | 7 | Zitate |
| Mather, Cotton | (1663 - 1728) | 2 | Zitate |
| Matisse, Henri | (1869 - 1954) | 6 | Zitate |
| Matsushita, Konosuke | (1894 - 1989) | 2 | Zitate |
| Matthau, Walter | (1920 - 2000) | 2 | Zitate |
| Matthäus, Lothar | (*1961) | 1 | Zitat |
| Matthäus (Evangelist) | | 1 | Zitat |
| Matthöfer, Hans Hermann | (1925 - 2009) | 1 | Zitat |
| Maugham, William Sommerset | (1874 - 1965) | 10 | Zitate |
| Mauldin, Bill | (1921 - 2003) | 2 | Zitate |
| Maupassant, Guy | (1850 - 1893) | 6 | Zitate |
| Mauriac, François | (1885 - 1970) | 6 | Zitate |
| Maurier, Daphne | (1907 - 1989) | 1 | Zitat |
| Maurina, Zenta | (1897 - 1978) | 6 | Zitate |
| Maurois, André | (1885 - 1967) | 1 | Zitat |
| Maximilian I. | (1573 - 1651) | 1 | Zitat |
| Maxwell, James Clerk | (1831 - 1879) | 2 | Zitate |
| May, Karl | (1842 - 1912) | 12 | Zitate |
| May, Rollo | (1909 - 1994) | 7 | Zitate |
| Mayer, Frederick | (1921 - 2006) | 3 | Zitate |
| Mayer-Vorfelder, Gerhard | (1933 - 2015) | 1 | Zitat |
| Mayr, Ernst | (1904 - 2005) | 2 | Zitate |
| Mazzini, Giuseppe | (1805 - 1872) | 4 | Zitate |
| McCallum, David | (*1933) | 2 | Zitate |
| McCarthy, Eugene Joseph | (1916 - 2005) | 2 | Zitate |
| McCarthy, Mary Therese | (1912 - 1989) | 3 | Zitate |
| McCartney, Paul James | (*1942) | 5 | Zitate |
| McClintock, Barbara | (1902 - 1992) | 3 | Zitate |
| McCourt, Frank | (1930 - 2009) | 1 | Zitat |
| McDonald, Ian | | 1 | Zitat |
| McDonald, John Dann | (1916 - 1986) | 2 | Zitate |
| McFee, William | (1881 - 1966) | 1 | Zitat |
| McFerrin, Bobby | (*1950) | 1 | Zitat |
| McGovern, George | (1922 - 2012) | 2 | Zitate |