心理学家必须是一个冷静的观察者。
The psychologist must be a dispassionate observer.
Innovation in forestry begins with respecting traditional wisdom.
插图不仅仅是图画；它们是故事的灵魂。
You can't judge a book by its cover, but you can by its first chapter.
出自《海国图志序》。善于学习外国的长处，就能够征服外国;不善于学习外国的长处就会被外国所征服。