alone. Some important philosophers commonly associated with empiricism include  Aristotle ,  Alhazen ,  Avicenna ,  Ibn Tufail ,  Robert Grosseteste ,  William of Ockham ,  Francis Bacon ,  Thomas Hobbes ,  John Locke ,  George Berkeley ,  David Hume ,  John Stuart Mill ,  Gilles Deleuze  and  Félix Guattari . [ edit