Here he is in his paper and says at that time I decided that it was advantageous to find a more general system of the elements and here is my attempt.

他在论文中说，当时,我觉得发现更多,的元素的通用系统是很有用的,这就是我的计划。

麻省理工公开课 - 固态化学导论课程节选

It started not really as a planned system not planned by any government.

出于经验才产生的机构,它并不是在一个计划好了的系统中生成的。

耶鲁公开课 - 金融市场课程节选