Sentence:  Sometimes one feels that Ramus is about to apply his notion of genesis to the abstractive process itself so as to include the steps which <WSD>lead up</WSD> to, or can <WSD>lead up</WSD> to, scientific knowledge, instead of restricting it to the abstractionist approach of his invention and disposition. 
Meaning of the word marked with <WSD> tags:  To set in motion; to act as a causal or preparatory event or sequence of events.