By Rousseau, Jean-Jacques
By Paine, Thomas
By Hodgkinson, Tom
By Gray, John, John Gray
By Sen, Amartya
By Ferguson, Niall
By More, Thomas
By Mill, John Stuart
By Bellow, Saul
By Lenin, Vladimir
By Machiavelli, Niccolo
By James Holland, Holland, James
By Mandela, Nelson, Quayson, Ato
By Chakrabarti, Shami
By Jr., Martin Luther King
By Montaigne, Michel Eyquem de, Screech, M.A.
By Thoreau, Henry, Henry David
By U S Citizenship & Immigration Services
By Selby, Ian
By Unicef, Grant, James P.
By Bellamy, Richard
By Manfred B Steger
By World Commission On Environment and Development World Commission On Environment and Development, World Commission on Environment and Development
By Gilbert, Michael
By Mill, John Stuart, Gray, John
By Butler, Samuel, Mason, Michael
By Aristotle
By Zeldin, Theodore
By McLean, Iain