GRICE: SOPHISMATA ET PHILOSOPHISMATA

 In "The Causal Theory of Perception," Grice notes that it would be brusque to criticise his defence of traditionalist Price's causal theory of perception on the grounds that 'That pillar box seems red to me" sounds to the Oxonian ear, 'a bit brusque itself.'  

Grice goes on to quote a few philosophical theses, or dicta -- sophismata which have become philosophismata -- like 'What is necessary is not also possible.'

And the rest is history!