Nature is still the grand agent in making poets. [ Carlyle ]

Let every eye negotiate for itself, and trust no agent. [ William Shakespeare ]

Fiction is a potent agent for good in the hands of the good. [ Mme. Necker ]

The blackest of fluid is used as an agent to enlighten the world. [ Douglas Jerrold ]

Wisdom may be the ultimate arbiter, but is seldom the immediate agent in human affairs. [ Sir J. Stephen ]

Pity is not enough better than indifference to benefit materially either agent or recipient. [ Charles H. Parkhurst ]

Malice is a passion so impetuous and precipitate, that it often involves the agent and the patient. [ Government of the Tongue ]

The instinct of brutes and insects can be the effect of nothing else than the wisdom and skill of a powerful, ever-living agent. [ Newton ]

Great trials seem to be a necessary preparation for great duties. It would seem that the more important the enterprise, the more severe the trial to which the agent is subjected in his preparation. [ Edward Thomson ]

It is strictly and philosophically true in Nature and reason that there is no such thing as chance or accident; it being evident that these words do not signify anything really existing, anything that is truly an agent or the cause of any event; but they signify merely men's ignorance of the real and immediate cause. [ Adam Clarke ]