I just received in the mail the new CTCR document 'Christian Faith and Human Beings: Christian Care and Pre-Implantation Human Life' (more to come on the document itself). In it they quote at several points a Christian ethicist by the name Oliver O'Donovan. One quote in particular serves as a fantastic follow up to the previous Kaas quote on semantics. It demonstrates not only the changed in the words we use but some of the freight and implications of those words.
When we start making human beings we necessarily stop loving them; that which is made rather than begotten becomes something that we have at our disposal, not someone with whom we can engage in brotherly fellowship.
Oliver O'Donovan, Begotten or Made? (Oxford: Oxford University Press, 1984), 65. Found in the new CTCR document (named above) on pg. 28.