Because those moods are defined as varying states of the chemicals in the saline solution.
So Alain's claim is then "Our varying states of chemicals in a saline solution are unstable because we are only chemicals in a saline solution"?
That's trivial as can be.
It is trivial, but it's because the great-grandparent of your comment is essentially a statement of the parent. When you combine the two, you get a pretty trivial statement.
Here's the new thread for posting quotes, with the usual rules: