I make it a rule not to write reviews of books I haven’t read. I also do my best to avoid pontificating about them.
But I’m also a Quaker, who follows this rule about rules by the Elders of Balby, which they appended to a long list of rules for Quakers in 1656:
Dearly beloved Friends, these things we do not lay upon you as a rule or form to walk by; but that all, with a measure of the light, which is pure and holy, may be guided: and so in the light walking and abiding, these things may be fulfilled in the Spirit, not in the letter, for the letter killeth, but the Spirit giveth life.