groan."--Cicero, Tusc., ii. 17]

These strange examples will not appear so strange if we consider what we
have ordinary experience of, how much custom stupefies our senses. We
need not go to what is reported of the people about the cataracts of the
Nile; and what philosophers believe of the music of the spheres, that the
bodies of those circles being solid and smooth, and coming to touch and
rub upon one another, cannot fail of creating a marvellous harmony, the
changes and cadences of which cause the revolutions and dances of the
stars; but that the hearing sense of all creatures here below, being
universally, like that of the Egyptians, deafened, and stupefied with the
continual noise, cannot, how great soever, perceive it--[This passage is
taken from Cicero, "Dream of Scipio"; see his De Republica, vi. II. The
Egyptians were said to be stunned by the noise of the Cataracts.]--
Smiths, millers, pewterers, forgemen, and armourers could never be able
to live in the perpetual noise of their own trades, did it strike their
ears with the same violence that it does ours.

My perfumed doublet gratifies my own scent at first; but after I have
worn it three days together, 'tis only pleasing to the bystanders. This
is yet more strange, that custom, notwithstanding long intermissions and
intervals, should yet have the power to unite and establish the effect of
its impressions upon our senses, as is manifest in such as live near unto
steeples and the frequent noise of the bells. I myself lie at home in a
tower, where every morning and evening a very great bell rings out the
Ave Maria: the noise shakes my very tower, and at first seemed
insupportable to me; but I am so used to it, that I hear it without any
manner of offence, and often without awaking at it.

Plato--[Diogenes Laertius, iii. 38. But he whom Plato censured was not