[5] And the term corruption is used to signify a change for the worse; it is also used to signify the utter destruction of that which exists, a destruction so complete as to have no existence at all; for as nothing is generated out of nothing, so neither can anything which exists be destroyed so as to become non-existence. [1] For it is impossible that anything should be generated of that which has no existence anywhere, as equally so that what does exist should be so utterly destroyed as never to be mentioned or heard of again. And indeed in this spirit the tragedian says:— "Nought that e’er has been Completely dies, but things combined Before another union find; Quitting their former company, And so again in other forms are seen." [2]