Self-evident principle is that everything in the universe has its proper place, hence one can deduce that objects fall to the ground because that’s where it belongs.

因而人们可以推断出，物体掉到地上是因为物体本身就属于大地的。

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But here's the point: The integrated American model of affluence linked to democracy linked to free markets as one indivisible principle doesn't seem so self-evident anymore.

FORBES: Magazine Article

As we mark the 100th anniversary of Rosa Parks's birth, we celebrate the life of a genuine American hero and remind ourselves that although the principle of equality has always been self-evident, it has never been self-executing.

WHITEHOUSE: The White House