The development of attention in childhood is a foundation for self-regulation and academic achievement.

You can eat any dessert you want if you take only 3 bites.

艺术家的角色是提出问题，而不是提供答案。

解释：神态傲慢，谁还愿意和你相处呢？最洁白的东西好像十分黑暗，最道德的人好像有所不足。