Guard well the talent of speech, for it is a mighty power for evil as well as for good. You cannot be too careful of what you say; for the words you utter show what power is controlling the heart. If Christ rules there, your words will reveal the beauty, purity, and fragrance of a character molded and fashioned by His will. But if you are under the guidance of the enemy of all good, your words will echo his sentiments.... (HP 174.5) MC VC