That which in the train of our voluntary actions determines the will to any change of operation is SOME PRESENT UNEASINESS, which is, or at least is always accompanied with that of DESIRE.

Desire is always moved by evil, to fly it: because a total freedom from pain always makes a necessary part of our happiness: but every good, nay, every greater good, does not constantly move desire, because it may not make, or may not be taken to make, any necessary part of our happiness.

For all that we desire, is only to be happy.

But, though this general desire of happiness operates constantly and invariably, yet the satisfaction of any particular desire CAN BE SUSPENDED from determining the will to any subservient action, till we have maturely examined whether the particular apparent good which we then desire makes a part of our real happiness, or be consistent or inconsistent with it.

The result of our judgment upon that examination is what ultimately determines the man; who could not be FREE if his will were determined by anything but his own desire, guided by his own judgment.
74.