For my own part I feel no disinclination whatever to give that degree of credit to the opinion of the probable immortality of man on earth, which the appearances that can be brought in support of it deserve.
Before we decide upon the utter improbability of such an event, it is but fair impartially to examine these appearances; and from such an examination I think we may conclude, that we have rather less reason for supposing that the life of man may be indefinitely prolonged, than that trees may be made to grow indefinitely high, or potatoes indefinitely large.

Though Mr Godwin advances the idea of the indefinite prolongation of human life merely as a conjecture, yet as he has produced some appearances, which in his conception favour the supposition, he must certainly intend that these appearances should be examined and this is all that I have meant to do..