Because if you're one of these pessimistic penguins up there who just does not believe they can fly, you certainly never will. Because to make any kind of progress, we need to be able to imagine a different reality, and then we need to believe that that reality is possible.
如果你是上面那些悲观的企鹅 根本不相信自己可以飞翔， 那你肯定永远也飞不起来。 我们必须有能力想象与现实不同的未来， 相信我们的构想能够实现， 才能真正取得进展。