Nature never appeals to intelligence until habit and instinct are useless. There is no intelligence where there is no need of change.
Interpretation
Intelligence is often only utilized in the face of necessity for change when habits and instincts fail.
In this quote, H. G. Wells suggests that people typically rely on instinct and established habits until they encounter a situation that demands intellectual engagement. It implies that true intelligence is ignited by the need for change, highlighting the relationship between the necessity for adaptation and the application of thought and reason.
In practice
In a speech about climate change, you might use this quote to highlight the need for intelligence in tackling environmental issues.
He spares no resource in telling of his dead inventions... Bare verbs he rarely tolerates. He splits infinitives and fills them up with adverbial stuffing. He presses the passing colloquialism into his service. His vast paragraphis sweat and struggle; the
It [a new world order] needs only that the governments of Britain, the United States, France, Germany, and Russia should get together in order to set up an effective control of currency, credit, production, and distribution – that is to say, an effective ‘dictatorship of prosperity,’ for the whole world. The other sixty odd States would have to join in or accommodate themselves to the over-ruling decisions of these major Powers.
Things that would have made fame of a less clever man seemed tricks in his hands. It is a mistake to do things too easily.
But I was too restless to watch long; I'm too Occidental for a long vigil. I could work at a problem for years, but to wait inactive for twenty-four hours - that's another matter.
The greatest task of democracy, its ritual and feast - is choice.
I came out for exercise, gentle exercise, and to notice the scenery and to botanise. And no sooner do I get on that accursed machine than off I go hammer and tongs; I never look to right or left, never notice a flower, never see a view - get hot, juicy, red - like a grilled chop. Get me on that machine and I have to go. I go scorching along the road, and cursing aloud at myself for doing it.
Nothing has prepared sharks, squid, krill and other sea creatures for industrial-scale extraction that destroys entire ecosystems while targeting a few species.
The Rose is without 'why'—she blooms because she blooms.
The spacious firmament on high,_x000D_ _x000D_ And all the blue ethereal sky,_x000D_ _x000D_ And spangled heavens, a shining frame,_x000D_ _x000D_ Their great Original proclaim.
Touch the earth, love the earth, honour the earth, her plains, her valleys, her hills, and her seas; rest your spirit in her solitary places.
If religion and science could be united on the common ground of biological conservation, the problem would be soon solved. If there is any moral precept shared by people of all beliefs, it is that we owe ourselves and future generations a beautiful, rich, and healthful environment.
Both the United States and the world economy have already reached - and surpassed - their sustainable physical limits. Ground water is being drawn down, soils eroded, forests cut faster than they grow, fish caught faster than they reproduce, non-renewable fossil fuels burnt without developing substitutes.
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