Sentence:  So all-important are ideas , we are told , that persons successful in business and happy in social life usually fall into two classes : those who invent <WSD>new</WSD> ideas of their own , and those who borrow , beg , or steal from others . 
Meaning of the word marked with <WSD> tags:  not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered