2 Quotes by Bertalanffy Ludwig Von

Living forms are not in being, they are happening, they are the expression of a perpetual stream of matter and energy which passes through the organism and at the same time constitutes it.

The living organism is maintained in a continuous exchange of components; metabolism a a basic characteristic of living systems. We have, as it were, a machine composed of fuel spending itself continually and yet maintaining itself. Such machines do not exist today.