"We are all agreed that your theory is crazy. The question which divides us is whether it is crazy enough to have a chance of being correct."

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。

切割金属艺术的第一步是找到一个具备必要技能和经验的人。

The biggest pressure is the pressure I put on myself.

我们必须愿意失败，愿意犯错，愿意带着学到的教训重新开始。