If winter comes ,can spring be far behind? 英国诗人-

雪莱

Histories make men wise; poems witty;the mathematics subtle; natural philosophy deep moral grave logic and rhetoric able to contend. ( Francis Bacon) 历史使人明智;诗词使人灵秀;数学使人周密;自然哲学使人深刻;伦理使人庄重;逻辑修辞学使人善辩. (英国哲学家,培根)