The universe is a vast and complex system, and understanding it requires both theoretical insights and observational evidence.
The future of agriculture lies in sustainable practices that benefit both the farmer and the environment.
We must not always talk in the market-place of what happens to us in the forest.
The universe will change if you bring up your children, in behavioristic fashion, to be unafraid.
一个观念的价值在于它的实际后果。
"History is not the past—it is the method we have evolved of organizing our ignorance of the past."