集邮是一项高尚的文化娱乐活动，它能增长知识，陶冶情操，世界上许多知名人士都对集邮感兴趣。马克思和恩格斯是青少年集邮的积极支持者。马克思的女儿爱琳娜喜欢集邮，马克思经常将来信的邮票从信封上揭下来送给女儿，并帮助她整理邮票，还将邮票上的名人或各国风光，饶... Philately is a noble cultural and recreational activity. It can increase knowledge and cultivate sentiments. Many famous people in the world are interested in philately. Marx and Engels are active supporters of youth philately. Marx’s daughter, Elena, likes stamp collecting. Marx often sends stamps of future letters from her envelope to give her daughters and helps her organize stamps, stamping famous celebrities or national sce ...