Herbert Spencer / Reinhold Niebuhr / Charles Saunders Peirce / William Graham Sumner / John Halpin / Abraham Lincoln / Herbert Croly / Frank Gilbreth / Ayn Rand / Conor P. Williams / Walter Nugent / Christopher Lasch / Edward Bellamy / John Dewey / Frederick Winslow Taylor / Barack Obama / Alexander Hamilton / Lillian Gilbreth / /