many are not aware of what it is that they really believe; for, as the act
of mind by which a thing is believed is different from that by which we
know that we believe it, the one act is often found without the other.
Also, amid many opinions held in equal repute, I chose always the most
moderate, as much for the reason that these are always the most convenient
for practice, and probably the best (for all excess is generally vicious),
as that, in the event of my falling into error, I might be at less
distance from the truth than if, having chosen one of the extremes, it
should turn out to be the other which I ought to have adopted. And I
placed in the class of extremes especially all promises by which somewhat
of our freedom is abridged; not that I disapproved of the laws which, to
provide against the instability of men of feeble resolution, when what is
sought to be accomplished is some good, permit engagements by vows and
contracts binding the parties to persevere in it, or even, for the
security of commerce, sanction similar engagements where the purpose
sought to be realized is indifferent: but because I did not find anything
on earth which was wholly superior to change, and because, for myself in
particular, I hoped gradually to perfect my judgments, and not to suffer
them to deteriorate, I would have deemed it a grave sin against good
sense, if, for the reason that I approved of something at a particular
time, I therefore bound myself to hold it for good at a subsequent time,
when perhaps it had ceased to be so, or I had ceased to esteem it such.

My second maxim was to be as firm and resolute in my actions as I was
able, and not to adhere less steadfastly to the most doubtful opinions,
when once adopted, than if they had been highly certain; imitating in this
the example of travelers who, when they have lost their way in a forest,
ought not to wander from side to side, far less remain in one place, but
proceed constantly towards the same side in as straight a line as
possible, without changing their direction for slight reasons, although