During the last few years great efforts have been made to expedite the operation of weighing machines by the introduction of machinery, more or less complicated, which renders the machines to a great extent self-acting.
Matter is no longer animated or self-acting; it is subject to the will of an agent which can enter or quit it, perhaps at its own pleasure, perhaps at the compulsion of another.
The arches were designed to be fitted with self-acting drop gates; but they were not a success, and were only put into place on the Rosetta branch.
According to Leibnitz, while each immaterial element is a monadic substance and self-acting secondary cause, God is the primary cause of all.
Lotze agreed with Leibnitz that the things which cause phenomena are immaterial elements, but added that they are not simple substances, self-acting, as Leibnitz thought, or preserving themselves against disturbance, as Herbart thought, but are interacting modifications of the one substance of God.