保持进步的唯一方法是不断推动自己。
The only way to keep improving is to keep pushing yourself.
A teacher must have a healthy body, the skills of a farmer, the mind of a scientist, the interest in art, and the spirit of social reform.
能源的未来不是要在化石燃料和可再生能源之间做出选择，而是要在确保可靠性、可负担性和可持续性之间找到正确的平衡。
舞台上的掌声，是我最珍贵的礼物。