The only merit I have is to have painted directly from nature.

I'm not perfect, but I'm trying.

Never underestimate the power of the human spirit. It can overcome the most impossible odds.

To me programming is more than an important practical art. It is also a gigantic undertaking in the foundations of knowledge.

这句话杨在不同场合说过多次，每次表述时可能有个别字的差异。

在自然状态下，利益是权利的尺度。