make use of those that are ill, which are everywhere to be found: I
endeavour to render myself as agreeable as I see others offensive; as
constant as I see others fickle; as affable as I see others rough; as
good as I see others evil: but I propose to myself impracticable
measures.

The most fruitful and natural exercise of the mind, in my opinion, is
conversation; I find the use of it more sweet than of any other action of
life; and for that reason it is that, if I were now compelled to choose,
I should sooner, I think, consent to lose my sight, than my hearing and
speech. The Athenians, and also the Romans, kept this exercise in great
honour in their academies; the Italians retain some traces of it to this
day, to their great advantage, as is manifest by the comparison of our
understandings with theirs. The study of books is a languishing and
feeble motion that heats not, whereas conversation teaches and exercises
at once. If I converse with a strong mind and a rough disputant, he
presses upon my flanks, and pricks me right and left; his imaginations
stir up mine; jealousy, glory, and contention, stimulate and raise me up
to something above myself; and acquiescence is a quality altogether
tedious in discourse. But, as our mind fortifies itself by the
communication of vigorous and regular understandings, 'tis not to be
expressed how much it loses and degenerates by the continual commerce and
familiarity we have with mean and weak spirits; there is no contagion
that spreads like that; I know sufficiently by experience what 'tis worth
a yard. I love to discourse and dispute, but it is with but few men, and
for myself; for to do it as a spectacle and entertainment to great
persons, and to make of a man's wit and words competitive parade is, in
my opinion, very unbecoming a man of honour.

Folly is a bad quality; but not to be able to endure it, to fret and vex