The study of mathematics is like air or gravity – it’s everywhere, even if you don’t see it.
It's on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.
Natural gas is the bridge fuel that will help us achieve a lower-carbon future.
在说某人做了某事时,我们可能也在执行某项行动。
每个圣人都有过去,每个罪人都有未来。