The most difficult challenges often present the greatest opportunities for transformation.
True sustainability means meeting today's needs without compromising tomorrow's possibilities.
Children are not just miniature adults; they have their own way of seeing and understanding the world.
我思故我在已被废弃；我们应说，我感受故我在。
出自汉·桓宽《盐铁论·执务》。阜，土山。土积得多便会成山，水积得多便成江河。此以积土成山、积水成河为喻，说明积少成多、凡事要从一点一滴做起的道理。