optimist

Even optimists admit the outlook to be poor.

甚至乐观人都认为前景不好。

Pete, ever the optimist, said things were bound to improve.

一向乐观说，事情必定是会好转。

We are optimist and realist.

我们是乐观主者，又是现实主者。

The man who is a pessimist before forty-eight knows too much; the man who is an optimist after forty-eight knows too little.

未逾四十八岁悲观主者，是知道得太多之人；而年逾四十八岁乐观主者，是知道得太少之人。