No doubt form and movement speak aloud of one's condition, but the expression of a man's face speaks louder still. There come distinct changes at every impulse, at every change of emotion, making distinct marks which are an open book to a seer. The word Kashf means "opening", and it is used by the Sufis with the meaning that the heart is, as a rule, a closed book and the one to whom it becomes open can read it like an open book. No doubt reading man's condition of mind from his appearance is not such a difficult thing. Even dogs and cats can know this, and sometimes they know better than man does. What gives one insight into another is, in the first place, his sympathy.