I'm a big believer in 'to each his own.'

Energy security is a crucial guarantee for national development. We must intensify technological innovation to enhance the efficiency of oil and gas exploration and production.

语出汉·桓宽《盐铁论·刺议》。能够与下面人商量计策的领导，是不会失策的；能发挥大家作用的人，是不会不成功的。

The pain you feel today will be the strength you feel tomorrow.

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。