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.
Don't you realize that the sea is the home of water? All water is off on a journey unless it's in the sea, and it's homesick, and bound to make its way home someday.
Basically, I think 21st century conservation is moving toward preserving ecosystems by dealing with the needs of people.
The trees have inquisitive eyes, haven't they? -that is, seem as if they had. And the river says,-'Why do ye trouble me with your looks?' And you seem to see numbers of to-morrows just all in a line, the first of them the biggest and clearest, the others getting smaller and smaller as they stand further away; but they all seem very fierce and cruel and as if they said, 'I'm coming! Beware of me! Beware of me!
For every human illness, somewhere in the world there exists a plant which is the cure.
The sequoias belong to the silences of the milleniums. Many of them have seen a hundred human generations rise, give off their little clamors and perish. They seem indeed to be forms of immortality standing here amoing the transitory shapes of time.
Once plants and animals were raised together on the same farm - which therefore neither produced unmanageable surpluses of manure, to be wasted and to pollute the water supply, nor depended on such quantities of commercial fertilizer. The genius of American farm experts is very well demonstrated here: they can take a solution and divide it neatly into two problems.
Subscribe for the occasional hand-picked quote. No noise.