New forms of thought as well as new subjects for thought must arise in the future as they have in the past, giving rise to new standards of elegance.

　　參考答案:

　　要點：這是個主從復合句。as they have(arisen)in the past是狀語從句，as 的意思是如同。giving...elegance是一個現在分詞短語，做主句謂語的伴隨狀語。give rise to 的意思是引起，使發生。翻譯時首先應把as they have in the past分出來譯成一個分句放在句首，然后采用逆序法翻譯句子的主語和謂語，最后翻譯現在分詞短語。

　　譯文：同過去一樣，將來必然會出現新的思維對象和新的思維方式，從而給完美以新的標準。