最好的歌曲是来自灵魂的那些。
The best songs are the ones that come from the soul.
爱情是心中的一个洞。
You will never be happy if you continue to search for what happiness consists of. You will never live if you are looking for the meaning of life.
Love is not enough. It has to be tended, like a fire.
实际发展水平与潜在发展水平之间的距离，前者由独立解决问题决定，后者由在成人指导下或与更有能力的同伴合作解决问题决定。