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 unanimity and transferring thought from one mind to another. Every symbol or phrase, like every gesture, throws the observer into an attitude to which a certain idea corresponded in the speaker; to fall exactly into the speaker’s attitude is exactly to understand. Every impediment to contagion and imitation in expression is an impediment to comprehension. For this reason language, like all art, becomes pale with years; words and figures of speech lose their contagious and suggestive power; the feeling they once expressed can no longer be restored by their repetition. Even the most inspired verse, which boasts not without a relative justification to be immortal, becomes in the course of ages a scarcely legible hieroglyphic; the language it was written in dies, a learned education and an imaginative effort are requisite to catch even a vestige of its original force. Nothing is so irrevocable as mind.

The moon comes back, the spirit not.
 * Unsure the ebb and flood of thought,

There is, however, a wholly different and far more positive method of reading the mind, or what in a metaphorical sense is called by that name. This method is to read character. Any object with which we are familiar teaches us to divine its habits; slight indications, which we should be at a loss to enumerate separately, betray what changes are going on and what promptings are simmering in the organism.