反饋是一個強大的概念，在自然系統(tǒng)和技術(shù)系統(tǒng)中被廣泛使用。
We must fish with the future in mind, not just the present.
Poetry is the language of the soul, and the soul speaks in the language of the heart.
The advantage of poetry over life is that poetry, if it is sharp enough, may last.