A proof tells us where to concentrate our doubts.
如果你想走得快,独自前行;如果你想走得远,结伴同行。
推动的关键在于让正确的选择变得容易。
把生活简化到极致,发现其中的真谛。
Give the pupils something to do, not something to learn; and the doing is of such a nature as to demand thinking; learning naturally results.