Mercury in Cancer
These people communicate with feeling, conveying a sensitive, withdrawn, and thoughtful nature to the people they interact with. If this is the only personal planet in Cancer in their chart, they may come across as more personal and sensitive than they actually are.
No matter how free-spirited the rest of their natal charts may be, Mercury in Cancer people can be very subjective and personal, or they opt not to talk at all. They are slow to respond at times, giving others the impression that they are deep thinkers. They probably are just that. Cancer is a meditative and reflective sign. Still, Mercury in Cancer people are much faster at forming opinions and making decisions than they appear. Because they listen so well to others, this speed is not obvious.
Liv Tyler Interview
You can bet that Mercury in Cancer natives will remember almost anything — from their own past, to your conversation two months ago. You might notice their memory is a little skewed in the direction of emotion. The truth is, these people remember the mood surrounding all the moments they have stored in their memory. This is because they “feel you out” when you are talking to them. The words are not as important to them as the emotions behind them.