I've lost track of what number I got up to but, in the paradoxical world of axioms, I have discovered two that are opposite yet true. The first I credit to Bishop Colin Buchanan, heard in a liturgy lecture in about 1983.
A clock that strikes thirteen is not only wrong once; it also casts doubt on all further teaching from the same source.
Today, as I immediately forgave an apologetic, and normally punctual, responder for a delay in doing something, I realised that I also allow myself to be guided by:
Consistency in performance earns you the right to err from time to time.
The wisdom trick is to know the difference.