When matter is living we contend that it can only have been begotten of other like living matter
 Samuel Butler, The Note-Books of Samuel Butler (1912). copy citation

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Author Samuel Butler
Source The Note-Books of Samuel Butler
Topic living
Date 1912
Language English
Reference
Note
Weblink http://www.gutenberg.org/files/6173/6173-h/6173-h.htm

Context

“That is to say it must become as near non-living as anything can become. Sooner or later, then, we get this introduced matter to be non-living (as we may call it) and the puzzle is how to get it living again. For we strenuously deny equivocal generation. When matter is living we contend that it can only have been begotten of other like living matter; we deny that it can have become living from non-living. Here, however, within the bodies of animals and vegetables we find equivocal generation a necessity; nor do I see any way out of it except by maintaining that nothing is ever either quite dead or quite alive, but that a little leaven of the one is always left in the other.” source