Listen carefully and you'll see that President Smith's 1961 comment about colonizing the moon has not yet been contradicted.

We Are Here to Be Tried, Tested, Proved
Smith, Joseph Fielding
October 25, 1961

The above link is to a 575 kb MP3 file. It is the last two and a half minutes of a 33 minute BYU talk. Click on the link to begin streaming or right click (cntrl-click for macs) to save the file. Select "save as" or "download as." Or click here to access the entire talk (it's a 9.6 MB file).

On Friday, August 26, 2005, LDS Science Review posted an excellent summary of several of these Joseph Fielding Smith and the moon stories. I highly recommend Jared's article.