Language you think in is constraining... unless your language is the best that could ever exist. Of course, if you can only think in it, you couldn't imagine anything better.

Mathematical notation might be a better language to think in than any programming language; but even that is constraining - since mathematicians are constantly inventing new notation, and many mathematicians think in pictures or even... intuition.

Of course, he really meant for coding; I just wanted to note the bigger picture.