试管婴儿的研究是出于帮助不孕夫妇的愿望。
The work on IVF was driven by the desire to help infertile couples.
Words are, of course, the most powerful drug used by mankind.
The human heart is like the sea: it has its storms, its tides, and its depths; in it, too, there are pearls.
The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.
伟大的真理，其反面同样是伟大的真理。