Sometimes the simplest songs are the hardest to write.

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。

过去是我们背负的负担，以我们无法总是理解的方式塑造我们的现在和未来。

小说是揭示更深层次真相的谎言。

In the end, we are all just trying to find our place in the universe.

I try to live my life every day as if it's my last day.

恐惧是所有情感中最民主的。

一个国家制度的品质是其成功的最重要决定因素。

It’s not the strongest of the species that survive, nor the most intelligent, but the one most responsive to change.

A key insight in learning theory is that the complexity of a hypothesis class is crucial for generalization.