领导者必须有勇气在今天做出艰难的决定，以换取更美好的明天。
Prediction is very difficult, especially about the future.
Sometimes we get sad about things and we don’t like to tell other people that we are sad about them.
有时我们会为某些事情感到悲伤，而我们不愿意告诉别人我们为此感到悲伤。
The best way to cheer yourself up is to try to cheer somebody else up.
"Memory is what we thought we'd forgotten; it's what we have forgotten we've forgotten."