eternality

Lavoisier took the third step by showing that the matter which enters into the constitution of the universe is an eternality.

Mayer took the fourth step by showing that the force which enters into the constitution of the universe is an eternality.

It destroys on the one hand the idea of the eternality of economic laws and limits them to particular epochs.

Which shows that together with the non-eternality of the thing denoted there goes the non-eternality of the denoting word.