Warnock and Grice on 'causa sui' and 'uncaused'

The expression ‘Every event has a cause’ is - owing to the impossibility of describing any
circumstance that could show it to be false - vacuous and utterly uninformative . . . (G. J.
Warnock, ‘“Every Event Has a Cause”’, Essays in Logic and Language, 2nd series, p.
109.)