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He who is not contented with what he has,would not be contented with what he would like to have.
生活,我们在世上是为了对它尽力增益,而不是从中竭力索取。
创新不是一蹴而就的,而是需要持续不断的努力和积累。
Attention is the taking possession by the mind, in clear and vivid form, of one out of what seem several simultaneously possible objects or trains of thought.