Don’t be so put off by the messenger that you miss the message. You may not like the presentation, but the information shouldn’t be ignored.
Don’t jump to conclusions. Just because you and a certain someone don’t see eye-to-eye doesn’t mean you can’t share the same concerns.
Pinning someone down to specifics could be shortsighted. Don’t be penny-wise and pound-foolish. See where a client wants to go with a certain venture.
Take a breather because an argument has gotten out of hand. Both of you are being equally provocative while feeling maligned by the other. Tempers need to cool.
Don’t be too quick to doubt someone you once believed in. This person’s views have departed from yours, but it doesn’t make them any less valuable.
You may be seeking approval from someone unable to show it. Do yourself (and this person) a favor and skip it.