"The past is always tense, the future perfect."

"Istanbul’s fate is my fate: I am attached to this city because it has made me who I am."

The only way to change the world is to change yourself.

Collaboration across sectors is key to solving the world's energy challenges.

出自北齐·颜之推《颜氏家训·文章》。书写文章要尊崇“三易”的原则，即文章内容要清晰明了，这是第一项。书写的文字要简单概要，这是第二项。书写的段落要读起来朗朗上口这是第三项。