繁荣的森林是成功的最终衡量标准。
La soledad es el precio de la libertad.
Behavior is governed by the same laws in humans and animals.
What good is the warmth of summer, without the cold of winter to give it sweetness.
儿童的一切教育都必须遵循一个原则,即帮助孩子身心自然的发展。