The only meaningful way to study learning is through objective measurement.
I'm a survivor. I'm not gonna give up. I'm not gonna stop. I'm gonna work harder.
"Every word we speak is a seed planted in the garden of the universe."
可持续性不是一种选择;它是我们对后代的责任。
不经过一年中最寒冷的时候,无法知道松柏是最后凋谢的;不经过艰难的考验,无法知道一个人是不是真正的君子。