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Tradition says that Ptolemy, the great astronomer of the Greek and Roman world, worked peacefully in his observatory under the clear skies of northern Egypt for 40 years.
傳說古希臘和羅馬時期的偉大天文學(xué)家托勒密曾在埃及北部晴朗天空下的觀測站默默地工作了40年。
Many and great were his explorations of the starry universe.
他對繁星密布的宇宙作了許多偉大的探索。
For instance, he described astronomical refraction in a way that was not improved for over 1,000 years.
例如，他使用改進(jìn)了的方法來描述天體折射，而這種方法已有一千多年沒有任何改進(jìn)了。
Ptolemy wrote just one poem, but it expressed his whole life:
托勒密一生中只寫過一首詩，但它體現(xiàn)了他的一生：
Mortal I know I am, short-lived:
我深知，生命苦短，固有一死，
and yet, whenever I watch the multitude of swirling stars, then I no longer tread this earth,
但每當(dāng)我遙望流轉(zhuǎn)的繁星，便能飛離塵世，
but rise to feast with God, and enjoy the food of the immortals.
升空與上帝同飲，與諸仙共享美味佳肴。
Learning extends our lives(as Ptolemy said) into new dimensions.
學(xué)習(xí)將我們的生命延伸（如托勒密所說）至新的維度。
It is cumulative. Instead of diminishing, in time, like health and strength, its returns go on increasing, provided...
學(xué)習(xí)是逐漸積累的過程。它不像健康和能量一樣會隨著歲月的流逝而逐漸減弱，相反，它給我們的回報會持續(xù)增加，只要……
