世界需要能源，但它比以往任何时候都更需要负责任的能源。
The world needs energy, but it needs responsible energy more than ever.
The mathematician's best work is art, a high perfect art, as daring as the most secret dreams of imagination, clear and limpid.
Everything is connected, everything.
即使官场得意，步步高升，也要保持廉洁奉公的作风；即使退位之后，也要坚守节操，有始有终。
最好的诗歌是那些为读者留有进入空间的作品。