1. There are trivial truths and the great truths. The opposite of a trivial truth is plainly false. The opposite of a great truth is also true. (Niels Bohr).
2. Truth may be stretched, but cannot be broken, and always gets above falsehood, as oil does above water. (Miguel Cervantes).
3. There is nothing so strong or safe in an emergency of life as the simple truth. (Charles Dickens).
6. Love truth, but pardon error. (Voltaire).