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。
We cannot change the past, but we can change our view of it.
Success is not about being the best, it's about being consistent and persistent in your efforts.
The act of creation is an act of resistance.
Programmers are not to be measured by their ingenuity and their logic but by the completeness of their case analysis.
Leadership is about inspiring others to achieve what they didn’t think was possible.