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"In other cases, where the field of choice is wider, and where opposite motives counterbalance and work against each other, the mind fluctuates for a while, and feels itself more loose: but, in the end, must as necessarily be determined to the side of the most powerful motive, as the balance, after several vibrations; must incline to the side of the preponderating weight."

— Home, Henry, Lord Kames (1696-1782)

Author

Home, Henry, Lord Kames (1696-1782)

Work Title

Essays on the Principles of Morality and Natural Religion

Place of Publication

Edinburgh

Publisher

Printed by R. Fleming

Date

1751

Metaphor

"In other cases, where the field of choice is wider, and where opposite motives counterbalance and work against each other, the mind fluctuates for a while, and feels itself more loose: but, in the end, must as necessarily be determined to the side of the most powerful motive, as the balance, after several vibrations; must incline to the side of the preponderating weight."

Metaphor in Context

A COMPARISON instituted betwixt moral and physical necessity may possibly throw additional light upon this subject. Where the motives to any action are perfectly full, cogent and clear, the feeling of liberty, as we showed before, entirely vanishes. In other cases, where the field of choice is wider, and where opposite motives counterbalance and work against each other, the mind fluctuates for a while, and feels itself more loose: but, in the end, must as necessarily be determined to the side of the most powerful motive, as the balance, after several vibrations; must incline to the side of the preponderating weight. The laws of mind, and the laws of matter, are in this respect perfectly similar; tho', in making the comparison, we are apt to deceive ourselves. In forming a notion of physical necessity, we seldom think of any force, but what has visibly a full effect. A man in prison, or tied to a post, must remain there. If he is dragged along, he cannot resist. Whereas motives, which, from the highest to the lowest, are very different, do not always produce sensible effects. Yet, when the comparison is accurately instituted, the very same thing holds in the actions of matter. A weak motive makes some impression: but, in opposition to one more powerful, it has no effect to determine the mind. In the precise same manner, a small force will not overcome a great resistance; nor the weight of an ounce in one scale, counter-balance a pound in the other. Comparing together the actions of mind and matter, similar causes will, in both equally, produce similar effects.
(pp. 169-171)