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“all that there is” as ultimately reducible to the concept of “matter in its motions.” This view holds that there is no essential difference between living and non-living systems in nature since both ultimately are expressions of the workings of the physical laws and only the physical laws.

Every once in a while somebody decides we know all the physical laws and the physics budget can safely be eliminated. Then somebody notices something that doesn't fit and it's off to the races once more.

So the above statement might be true in 952 AD, in 1750, in 1885, again in 1904, again in 1943, again in 1967, and again in 2112. In the inbetween years there are some loose ends and the statement is not true. It is not true in 2005, everything is up in the air again.