Generally speaking, envy, resentment, and self-pity are disastrous modes of thoughts.Self-pity gets fairly close to paranoia, and paranoia is one of the very hardest things to reverse.

现代采石要求我们同时成为地质学家、生态学家和社区外交官。

Technology has no good or evil; the key lies in how it is used.

衡量农民成功的真正标准不仅仅是每英亩的产量，还有为子孙后代留下的遗产。

无论成本压力如何，质量都不应妥协。