I didn't have to learn any language, because my BA was joint schools. If I'd done straight theology I'd have had to learn Greek. Similarly, if my M Phil had been just in patristics, I'd have had to learn Greek (or Latin if I'd been doing a Latin-speaking theologian for my thesis). But I did mine in patristics and modern theology so I got out of that! I learned Greek in my spare time, but I found it very hard. Greek is more important to theology than Latin is, although of course if you're going to specialise in medieval theology or something like that then Latin is more important. Augustine spoke Greek very badly and Aquinas didn't speak it at all, so perhaps I'm not in such bad company. I learned French at school, so my natural inability to learn languages was forcibly overridden! I should add that if you study modern theology you generally need to know German, because most of the really important theologians of modern times have written in German. Plus, of course, a lot of modern scholarship is German. Fortunately for me, an awful lot of patristics scholarship over the past century has been French.