Sometimes when humans are all set, it’s hard for us to really listen.
For example, when we’re all decided about something (we’re a political conservative or a liberal, religious or not, etc.), that decision tends to become the filter through which our attention works. Sometimes that’s a good thing, sometimes it isn’t. Clarity is a powerful feeling, but it is not the only state of attention. After all, clarity is not necessarily the same as wisdom.
Everything is the great communicator, not just some things. Maybe clarity has to be set aside on occasion in favor of being empty—perhaps the best state to really listen.