他有办法让她感到安全，即使是在最不确定的时刻。
He had a way of making her feel safe, even in the most uncertain of times.
唯一真正的错误是我们从中什么也没学到的错误。
世界上最成功的社会是那些结合了国家和市场优势的社会。
The personality of the teacher is the cornerstone of education.
质量不是声明；它是一种证明。
发现的道路很少是一条直线。
可持续性不是一种选择，而是一种必需。
解析：史与经的区别在于事与道。
Courtesy costs nothing. Lower the toilet seat after use. Let the people in the elevator exit before you enter. Return shopping carts to their designated areas. When you borrow something， return it better shape (filled up， cleaned) than when you got it.