书籍是人类的巨大财富之一，很多家庭却放弃了阅读。
Books are one of life's greatest pleasures, and in many families, they are falling by the wayside.
书籍是人类进步的阶梯，是宝贵的精神财富。
As we know books are the ladder of human progress and the valuable spiritual wealth.
伟人们的书籍是人类宝贵的精神财富，是智慧的结晶。
Great books left by the great men are human spiritual wealth. They are the predecessors' crystallization of wisdom.
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