Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
Interpretation
Humans have gained the ability to significantly change the world around them in the current century.
In this quote, Rachel Carson emphasizes the unique position of humanity in the present century, highlighting that for the first time, we possess the capability to affect the environment and the natural world on a grand scale. This power comes with the responsibility to consider the consequences of our actions and to tread carefully as we shape the future of our planet.
In practice
In a speech about environmental protection, one might say, 'As Rachel Carson noted, only within this century have we acquired the power to alter nature significantly.'
As crude a weapon as the cave man's club, the chemical barrage has been hurled against the fabric of life - a fabric on the one hand delicate and destructible, on the other miraculously tough and resilient, and capable of striking back in unexpected ways. These extraordinary capacities of life have been ignored by the practitioners of chemical control who have brought to their task no "high-minded orientation," no humility before the vast forces with which they tamper.
Why should we tolerate a diet of weak poisons, a home in insipid surroundings, a circle of acquaintances who are not quite our enemies, the noise of motors with just enough relief to prevent insanity? Who would want to live in a world which is just not quite fatal?
To stand at the edge of the sea, to sense the ebb and flow of the tides, to feel the breath of a mist moving over a great salt marsh, to watch the flight of shore birds that have swept up and down the surf lines of the continents for untold thousands of years, to see the running of the old eels and the young shad to the sea, is to have knowledge of things that are as nearly eternal as any earthly life can be.
We cannot have peace among men whose hearts find delight in killing any living creature.
Until we have courage to recognize cruelty for what it is - whether its victim is human or animal - we cannot expect things to be much better in the world. There can be no double standard. We cannot have peace among men whose hearts find delight in killing any living creature. By every act that glorifies or even tolerates such moronic delight in killing, we set back the progress of humanity.
The more clearly we can focus our attention on the wonders and realities of the universe about us, the less taste we shall have for destruction.
Next to the laborer in the fields, the walker holds the closest relation to the soil; and he holds a closer and more vital relation to nature because he is freer and his mind more at leisure.
Running gives me a clearer perspective on the world, and it makes me feel special. I've never been a traditional tourist. I've always seen the world by running, and that has allowed me to view things in a different way. Places look different in the early-morning hours, when the streets are deserted.
The earth was all before me. With a heart Joyous, nor scared at its own liberty, I look about; and should the chosen guide Be nothing better than a wandering cloud, I cannot miss my way.
Lots of people talk to animals... Not very many listen, though... That's the problem.
I've always been more interested in organisms that can move on their own than in stationary plants. But when I canoe or hike along the edge of lakes or oceans and see trees that seem to be growing out of rock faces, I am blown away. How do they do it?
The future will be green, or not at all
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