Sustainability must be the cornerstone of modern quarry operations, not an afterthought.
In science, the only constant is change.
预测未来的最好方法就是去实现它。
A man is the sum of his misfortunes. One day you'd think misfortune would get tired but then time is your misfortune.
The most dangerous phrase in business is "We've always done it this way."
The principle goal of education is to create men who are capable of doing new things, not simply repeating what other generations have done.