i suppose that it was in december of 2013 when nearly for the whole month members of pheu thai held a counter-demonstration in rajamangala stadium in bangkok near ramkamaeng university , where i work , ( demonstrations that only dispersed when it all became very violent and ugly as students protested against the protestors near their campus and against the retention of the corrupt prime minister yingluck shinawatra ) that i first envisaged cartesian skepticism not of empiricism which is descartess nonpareil achievement , but one of ethics .