derived sense of "instability."]

[Footnote 662: Love and Friendship. The subjects of the two essays
preceding _Prudence_, in the volume of 1841.]

[Footnote 663: The world is filled with the proverbs, etc. Compare
with this passage Emerson's words in _Compensation_ on "the flights of
proverbs, whose teaching is as true and as omnipresent as that of
birds and flies."]

[Footnote 664: A good wheel or pin. That is, a part of a machine.]

[Footnote 665: The law of polarity. Having two opposite poles, the
properties of the one of which are the opposite of the other.]

[Footnote 666: Summer will have its flies. Emerson discoursed
with philosophic calm about the impediments and disagreeableness which
beset every path; he also accepted them with serenity when he
encountered them in his daily life.]

[Footnote 667: The inhabitants of the climates, etc. As a
northerner, Emerson naturally felt that the advantage and superiority
were with his own section. He expressed in his poems _Voluntaries_ and
_Mayday_ views similar to those declared here.]

[Footnote 668: Peninsular campaign. Emerson here refers to
the military operations carried on from 1808 to 1814 in Portugal,
Spain, and southern France against the French, by the British,
Spanish, and Portuguese forces commanded by Wellington. What was the
"Peninsular campaign" in American history?]