只有向后看才能理解生活;但要生活好,则必须向前看。
我说不出这心为什么那样默默地颓丧着。是为了它那不曾要求、不曾知道、不曾记得的小小的需要。
"Your most unhappy customers are your greatest source of learning."
Every challenge in the quarry is an opportunity to innovate.
The more you sweat in peace, the less you bleed in war.