constitutional lawyer； and all the principles he lays down are capable
of being brought to the test of observation and experiment。 The path
he bids us follow professes to be； not a mere airy track； fabricated of
ideal cobwebs； but a solid and broad bridge of facts。 If it be so； it
will carry us safely over many a chasm in our knowledge； and lead us to
a region free from the snares of those fascinating but barren Virgins；
the Final Causes； against whom a high authority has so justly warned us。
〃My sons； dig in the vineyard；〃 were the last words of the old man in
the fable； and； though the sons found no treasure； they made their
fortunes by the grapes。
End