Apart from the representational content of an idea there is another component: its force and vivacity, its impetus.

For, besides, that many persons find too sensible an interest in perpetually recalling such topics; besides this, I say, the motive of blind despair can never reasonably have place in the sciences; since, however unsuccessful former attempts may have proved, there is still room to hope, that the industry, good fortune, or improved sagacity of succeeding generations may reach discoveries unknown to former ages.

Such is the nature of novelty that where anything pleases it becomes doubly agreeable if new; but if it displeases, it is doubly displeasing on that very account.

We find in the course of nature that though the effects be many, the principles from which they arise are commonly few and simple, and that it is the sign of an unskilled naturalist to have recourse to a different quality in order to explain every different operation.

...virtue is attended by more peace of mind than vice, and meets with a more favourable reception from the world. I am sensible, that, according to the past experience of mankind, friendship is the chief joy of human life and moderation the only source of tranquillity and happiness.

The whole of natural theologyresolves itself into one simple, though somewhat ambiguous proposition, That the cause or causesof order in the universe probably bear some remote analogy to human intelligence.

We need only reflect on what has been prov'd at large, that we are never sensible of any connexion betwixt causes and effects, and that 'tis only by our experience of their constant conjunction, we can arrive at any knowledge of this relation.