“All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.”
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It is beyond a doubt that all our knowledge that begins with experience.
All the interests of my reason, speculative as well as practical, combine in the three following questions: 1. What can I know? 2. What ought I to do? 3. What may I hope?
Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge.
Religion is the recognition of all our duties as divine commands.