[ArrogantBustard]

Many ‘old sayings’ are false.

[null and void]

Still, there was a time when it seemed every medieval monastery had what was said to be a sliver of The True Cross, the raw mass of all these bits of wood would suffice to build a modern suburban house at the very least.

[Sopater]

Many ‘old sayings’ are false.

So are many relics of the "true cross".

[Nifster]

and just as many are true....that’s why they are old sayings