Quote by Luc Montagnier
One could not have isolated this retrovirus without knowledge of other retroviruses, that's obvious. But I believe we have answered the criteria of isolation.
Summary
This quote suggests that successful isolation of a retrovirus requires a prior understanding of other retroviruses. The speaker acknowledges the importance of existing knowledge in the process but asserts that they have met the necessary criteria for isolation. The implication here is that proper understanding and application of this knowledge has allowed them to successfully isolate the retrovirus in question.