Memory is a tricky thing. It doesn't just recall events, it reshapes them.
War is a tragedy, but sometimes necessary.
The great powers are always searching for opportunities to gain power at the expense of their rivals, which makes them inherently aggressive.
There is no point treating a depressed person as though she were just feeling sad, saying, 'There now, hang on, you'll get over it.' Sadness is more or less like a head cold- with patience, it passes. Depression is like cancer.