论人生态度(attitude)
just as is revealed in the pictures above, people are generally classified into two types: the pessimistic and the optimistic. we can see in one picture some people, long-faced and downhearted, are counting the nights by the shadows while in the other picture the happy-go-lucky people are enjoying the starry nights. what a contrastive view! remember, it is not the bad thing that determines our state of mind
