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When a professor insists computer science is X but not Y, have compassion for his graduate students.

To feed the world, we must first understand it.

Sustainability isn't a trend—it's a responsibility we owe to future generations.

解釋：清澈與渾濁，細微與宏大，短小與綿長，急促與舒緩，哀傷與快樂，剛硬與柔軟，遲滯與快速，高昂與低徊，呼出與收縮，周密與疏朗，因此而相互輔助。