The most profound ideas in mathematics often arise from the simplest observations.

The most profound discoveries often come from asking the simplest questions.

经常静坐思考，来收拢思想；减少饮酒色欲，来清理思想；摒除嗜好情欲，来修养思想；体味古人教训，来警戒思想；悟察至理名言，来明确思想。

通货膨胀无论何时何地都是一种货币现象。

The past is never dead. It's not even past.

The only limit to our realization of tomorrow will be our doubts of today.

Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.

疫苗的安全性和有效性是其研发中最重要的标准。

意识是唯一的现实，所有的事物都是意识的显现。

Innovation is the key to staying ahead in the fruit industry.