The spirits, when once excited, easily receive a change in their direction; and it is natural to imagine this change will come from the prevailing affection.

The connexion is in many respects closer betwixt any two passions, than betwixt any passion and indifference.
When a person is once heartily in love, the little faults and caprices of his mistress, the jealousies and quarrels, to which that commerce is so subject; however unpleasant and related to anger and hatred; are yet found to give additional force to the prevailing passion.

It is a common artifice of politicians, when they would affect any person very much by a matter of fact, of which they intend to inform him, first to excite his curiosity; delay as long as possible the satisfying it; and by that means raise his anxiety and impatience to the utmost, before they give him a full insight into the business.

They know that his curiosity will precipitate him into the passion they design to raise, and assist the object in its influence on the mind.

A soldier advancing to the battle, is naturally inspired with courage and confidence, when he thinks on his friends and fellow-soldiers; and is struck with fear and terror, when he reflects on the enemy.