When someone says, “Believe me” or “Trust me” or “Believe you me”,
It’s a sales tactic.
Ah: found it:
If the truth can be told so as to be understood, it will be believed.
Re: Evolution (24 June 1994) This is derived from a statement of William Blake: “Truth cannot be told, so as to be understood, and not be believ’d.”
Fascinating: he flipped Blake’s quote around into a “truth is self-evident” – I imagine the founding fathers of the USA, when they said, “We hold these truths to be self-evident” it had as powerful an effect on their generation.