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gination enlarges, till they become only a sublime idea that shrinks from the enquiry of sense, and mocks the experimental philosophers who would confine this spiritual phlogiston in their material crucibles. I know that the human understanding is deluded with vain shadows, and that when we eagerly pursue any study, we only reach the boundary set to human enquires.—Thus far shalt thou go, and no further, says some stern difficulty; and the cause we were pursuing melts into utter darkness. But these are only the trials of contemplative minds, the foundation of virtue remains firm.—The power of exercising our understanding raises us above the brutes; and this exercise produces that 'primary morality,' which you term 'untaught feelings.'
If virtue be an instinct, I renounce all hope of immortality; and with it all the sublime reveries and dignified sentiments that have smoothed the rugged path of life: it is all acheat,
