"The first of these sentiments is reason.

"Then follows moderation.

"To these one may add:

"The faculty of penetration;

"The quality consistency.

"Then, wisdom, which permits us to profit by the lessons of experience.

"A number of other qualities must be added to these, in order to complete
the formation of common sense; but, altho important, they are only the
satellites of those we have just named.

"Reason is really indispensable to the projection of healthy thoughts.

"The method of reasoning should be the exhaustive study of minute detail,
of which we shall speak later.

"For the moment we shall content ourselves by indicating, along the broad
lines of argument, what is meant by this word reason.

"Reasoning is the art of fixing the relativeness of things.

"It is by means of reasoning that it is possible to differentiate events
and to indicate to what category they belong.