人は前進と後退を繰り返しながら進み、成長していく。
すぐには出来ないことも、諦めず進み続けることで忍耐力がついて出来るようになる。

Forward and backward
People move forward and backward repeatedly and grow. Even if you cannot do something right away, you will gain perseverance and become able to do it by continuing to move forward and not giving up.