All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason. – Immanuel Kant
But although all our knowledge begins with experience, it does not follow that it arises from experience. – Immanuel Kant
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. – Immanuel Kant
Even philosophers will praise war as ennobling mankind, forgetting the Greek who said: War is bad in that it begets more evil than it kills. – Immanuel Kant