The best evidence is that they chose broad terms (the freedom of speech, liberty, due process of law) whose particular meaning would necessarily change over time, with new circumstances and fresh learning. According to Justice Anthony Kennedy, writing in the 2015 case that ruled that all states must recognize same-sex marriages: The nature of injustice is that we may not always see it in our own times. The generations that wrote and ratified the Bill of Rights and the Fourteenth Amendment did not presume to know the extent of freedom in all of its dimensions, and so they entrusted to future
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