【译文】力气单薄就不要去背负重物，说话没分量就不要规劝别人。没有钱就不要到人群中去，遇到危难千万别去求亲戚。
The beauty of topological insulators lies in their robustness; their surface states are protected against disorder and imperfections.
Don’t let the noise of others’ opinions drown out your own inner voice.
The most important skill to learn is how to learn.