That strain again! It had a dying fall:
O, it came o'er my ear like the sweet sound
That breathes upon a bank of violets,
Stealing and giving odour! Enough; no more:
'Tis not so sweet as it was before.
Slavery is founded on the selfishness of man's nature - opposition to it on his love of justice. These principles are in eternal antagonism; and when brought into collision so fiercely as slavery extension brings them, shocks and throes and convulsions must ceaselessly follow.