In this case no diagonals are used, which is even more remarkable. Words don't even have to be in straight lines, if that fits our purpose. Both truth and crackpottery can be found within pi. We can explore the arts as well as the sciences. One of the giants of modal jazz was Miles Davis, whose initials appear no less than four times in the grid.
Some grids are rich enough to contain entire sentences or poems.
For her I'll try to Be a hero yet. Note the five four-letter horizontal words grouped into a 4x5 rectangle. The next step is to look for an NxN word square with words both horizontally and vertically. The first 1-letter word, O, is at digit 6456. The first two-letter word, the Greek letter NU, appears at digit 10351, followed not much later by US at 10868.