The shades of human character are so numerous, and the advantages
resulting from an extensive acquaintance with them, of so much
importance, that few subjects, perhaps, are more worthy of attention or
speculation; and it would be a task of the highest advantage to society,
could we trace the source and causes of the diversities, and point out
the particular advantages resulting from each. By the former of these,
we should, in some degree, be enabled to train the mind to the fashion
most amiable and really advantageous; by the latter, we should have the
opportunity of directing to their proper objects of pursuit the passions
and dispositions as they are displayed before us.
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