These are things to avoid.

Be firm, rather than aggressive; but be always quietly prepared for the aggressive man; that is to inspire confidence in the timid.

Avoid vituperation as a disease, but have your facts clear and ready for friend or foe.

Whenever, and wherever least expected, a false idea comes wandering forth, put in at once a luminous word or two to clear the air, hearten friends and keep them steady.

If you find yourself alone in the midst of opponents, who assume you are with them and expect your co-operation, you put them right with a word.