Your most unhappy customers are your greatest source of learning.

我觉得诗人是不会称自己为诗人的人。

Sustainability is not an option; it's a necessity for the future of agriculture.

The stock market is a device for transferring money from the impatient to the patient.

释义：强调意识形态斗争的极端重要性。

品质是我们的生命线，绝对不能妥协。