对于系统,翻版的模拟是在控制图中添加一个创建循环的边,而不仅仅是一个附加节点。
痛苦是不可避免的,但受苦是可以选择的。
We cannot always build the future for our youth, but we can build our youth for the future.
Memory is a trickster, always rewriting the past.