http://vn.myblog.yahoo.com/n_vantrung3007
"To learn and not to do is really not to learn.
To know and not to do is really not to know"
"D湛 動畛c m董 cu畉 b畉n li g狸! H達y th畛c hi畛n nguy畛n v畛ng 坦 c畛a b畉n theo c叩ch th畛c t畉 nh畉t m b畉n c坦 th畛"
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