Memory is not fixed; it’s a skill you can train.
释义：学习广博的知识，需要孜孜不倦地学习；学习能够坚持不懈，就有了坚定的志向。
The historian’s first duty is to the truth.
We have three baskets for investing：yes，no，and too tough to understand.
Don't be embarrassed by your failures, learn from them and start again.