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As a result , given their ethical doctrine that secure knowledge was necessary and sufficient for happiness , and since , according to ( 3 ) , such knowledge could be achieved by restricting one 's assent to cognitive impressions , the Stoics identified the avoidance of opinion and error — i.e. assent to non-cognitive impressions , whether inadequately warranted ( opinion ) or false ( error ) — as the overriding principle of rationality . In setting happiness as the intrinsic result of a policy of " following nature " , the Stoics and the Cyrenaics were in verbal agreement with Plato , though diverging to opposite poles in their answer to the psychological question as to the constituents of happiness . In support of this , the Stoics advanced the plausible claim that it is psychologically impossible to keep only nice emotions and give up the nasty ones . ” Hard to say if they had the pre-Socratics , the Stoics or the Logical Positivists in mind , but the guest rooms are far from spartan , the expected dark eucalyptus wood floors and cool white walls offset by a shot silk spread in silver and charcoal for the king-sized bed and a built-in L-shaped sofa liberally strewn with silk pillows . The bass player , the stoic of the band , was a kid named Felix Culpa , the married heart throb ; his wife , Mia , never spoke unless it was to ask for something to smoke ... " His philosophy was influenced by three famous Greek schools - the Cynics , the Stoics and the Epicureans - and he summed up all three in his famous phrase , ' You ca n't trust any bugger further than you can throw him , and there 's nothing you can do about it , so let 's have a drink . In Saturnalia reappear mythographical comments influenced by the euhemerists , the Stoics and the Neoplatonists .