#observed

We cannot observe external things without some degree of Thought; nor can we reflect upon our Thoughts, without being influenced in the course of our reflection by the Things which we have observed. ↗

— William Whewell

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#cannot #course #degree #external #external things

It is our task to inquire into the causes that have brought about the observed differentiation, and to investigate the sequence of events that have led to the establishment of the multifarious forms of human life. ↗

— Franz Boas

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#brought #causes #differentiation #establishment #events