Etica By marelbytoro Period: 484 BCE to 322 BCE Aristoteles Period: 469 BCE to 399 BCE Socrates Period: 436 BCE to 270 BCE El hedonismo Period: 429 BCE to 347 BCE Platon Period: 335 BCE to 180 El Estoicismo Period: 1226 to 1274 Santo tomas de Aquino Period: 1588 to 1776 El Empirismo Period: 1724 to 1804 Imanuel Kant Period: 1798 to 1917 El positivismo Period: 1818 to 1883 Karl Heinrich Marx Period: 1844 to 1900 Frederich Nietzsche Period: 1957 to 2005 La fenomenologia Period: 1971 to 2006 El liberalismo politico Period: 1978 to 2012 El Utilitarismo Period: 1993 to 2010 El existencialismo Period: 1995 to 2019 John Hospers Period: 1996 to 2019 Peter Singer