susceptible of proof

See: provable
Mentioned in ?
References in classic literature ?
You must use,' said the gentleman, 'for all these purposes, combinations and modifications (in primary colours) of mathematical figures which are susceptible of proof and demonstration.
communicates no factual proposition susceptible of proof or refutation.
I have long felt that the conservative vision, like its liberal and radical counterparts, contains a powerful core of beliefs -powerful not because these beliefs could be shown to be incontrovertibly true or false but precisely because they were not susceptible of proof or disproof.