Sentence:  We should not allow the image of an immanent end brought about indirectly by our own action in the continuing human struggle for a just endurable order of existence to blind us to the fact that in some measure <WSD>accelerating</WSD> the end of our lease may be one consequence among others of many other of mankind 's thrusts toward we know not what future . 
Meaning of the word marked with <WSD> tags:  move faster