Quotation Explorer - 'Presupposition'

Reason is the presupposition of faith, and faith is the fulfillment of reason. - Paul Tillich
The principle must always rule that ideas are not born of other ideas, philosophies of other philosophies; they are a continually renewed of real historical development. The unity of history (what the idealists call unity of the spirit) is not a presupposition, but a continuously developing process. - Antonio Gramcsi
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