If you mean to make your side of the argument appear plausible, do not prejudice the people against what you think truth by your passionate manner of… - James Burgh

The beauty of behaviour consists in the manner more than the matter of your discourse.

In the midst of mirth, reflect that many of your fellow creatures round the world are expiring; and that your turn will come shortly. So will you keep your life uniform and free from excess.

If you happen into company where the talk runs into party, obscemty, scandal, folly, or vice of any kind, you had better pass for morose or unsocial, among people whose good opinion is not worth having, than shock your own conscience by joining in conversation which you must disapprove of.