All significant truths are private truths. As they become public they cease to become truths; they become facts, or at best, part of the public character; or at worst, catchwords.
He spent hours and hours and hours practising these conjuring tricks. It's just such a curious thing.
There is one safeguard known generally to the wise, which is an advantage and security to all, but especially to democracies as against despots - suspicion.