If any man is able to convince me and show me that I do not think or act right, I will gladly change; for I seek truth by which no man was ever injured. But he is injured who abides in his error and ignorance.
–– Marcus Aurelius from Meditations p 26
If a man is mistaken, instruct him kindly and show him his error. But if thou art not able, blame thyself, or blame not even thyself.
–– Marcus Aurelius from Meditations p 48