A magic square is a square array of consecutive numbers
wherein every row, every column, and both diagonals add up to the same
number. Form a 6x6 magic square by moving successively the numbers in
the array. Only numbers adjacent to the blank space may be moved. The blank
space has a numerical
value of zero.
... arithmetic has a very great and elevating
effect, compelling the soul to reason about abstract number, and rebelling
against the introduction of visible or intangible objects into the
argument.