The first and foremost duty of the high school in teaching mathematics is to emphasize methodical work in problem solving...The teacher who wishes to serve equally all his students, future users and nonusers of mathematics, should teach problem solving so that it is about one-third mathematics and two-thirds common sense.
George PolyaThe best of ideas is hurt by uncritical acceptance and thrives on critical examination.
George PolyaThe principle is so perfectly general that no particular application of it is possible.
George PolyaIf there is a problem you can't solve, then there is an easier problem you can't solve: find it.
George Polya