 The heart speaks, sees, hears, walks, falls, stands, rejoices, cries, is comforted, is troubled, becomes hardened, grows faint, grieves, fears, can be broken, becomes proud, rebels, invents, cavils, overflows, devises, desires, goes astray, lusts, is refreshed, can be stolen, is humbled, is enticed, errs, trembles, is awakened, hates, envies, is searched, is rent, meditates, is like a fire, is like a stone, turns in repentance, becomes hot, dies, melts, is susceptible to fear, gives thanks, covets, becomes hard, makes merry, acts deceitfully, speaks from out of itself, loves bribes, writes words, plans, receives commandments, acts with pride, makes arrangements, and aggrandizes itself.Discussions of the laws of "tefillin" in appear at Mishnah Menachot 3