出自先秦《荀子·儒效》。对于所知道的东西就说知道,不知道的就说不知道;这样,对内是不欺骗自己的良心,对外是不欺骗他人。说明为人应当诚实的道理。
The work is not about the object, but about the experience.
The notion of truth is not definable in any formal system that is strong enough to include arithmetic.