[James C. Bennett]

The First Cause is not in motion, independent, outside time, perfect and unchanging. Therefore it is not in the set of that which needs a cause.

Can anything change anything else, without itself changing its changeless state?

[D-fendr]

Can anything change anything else, without itself changing its changeless state?

IF it was changeless, it would, therefore, not change, else it wasn't really in a changeless state.

In more general terms in the argument, the first cause is independent (in all senses of the word); everything we know in the universe is dependent - it requires something else in order to come into existence.