当我们为后代考虑而采石时,石头就变成了桥梁,而不仅仅是资源。
Man is free at the moment he wishes to be.
Energy transformation is a challenge but also an opportunity; the key lies in how to seize it.
出自先秦《荀子·劝学》。定居一定要选择适当的邻里,交游一定要接近贤士。说明要加强道德修养,就应该注意周围环境。