"The only way to do great work is to love what you do."

"The truth is rarely pure and never simple."

"A poet is someone who spends years patiently trying to discover the second being inside him."

我不想证明什么，我只想展示什么是可能的。

"In the end, all we have are the stories we tell."

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。