Meditation 8.29-30

29. Wipe out impressions by continually saying to yourself: it is in my power now not to allow any wickedness to be in this soul of mine, any appetite or disturbance at all, but seeing what is the character of them all I employ each according to its worth. Remember this power as Nature requires.

30. Speak both in the senate and to every man of whatever rank with propriety, without affectation. Use words that ring true.