Now property is part of a household, and the acquisition of property part of household-management; for neither life itself nor the good life is possible without a certain minimum supply of the necessities.
For both excessive and insufficient exercise destroy one's strength, and both eating and drinking too much or too little destroy health, whereas the right quantity produces, increases and preserves it. So it is the same with temperance, courage and the other virtues. This much then, is clear: in all our conduct it is the mean that is to be commended.
Now that practical skills have developed enough to provide adequately for material needs, one of these sciences which are not devoted to utilitarian ends [mathematics] has been able to arise in Egypt, the priestly caste there having the leisure necessary for disinterested research.
Maybe crying is a means of cleaning yourself out emotionally. Or maybe it's your last resort; the only way to express yourself when words fail, the same as when you were a baby and had no words.
Two characteristic marks have above all others been recognized as distinguishing that which has soul in it from that which has not - movement and sensation.