We must think poetically to know the limitation of technical science.
For a man to be blind, he must remain a being by nature endowed with sight. A piece of wood can never go blind. But when man goes blind, there always remains the question whether his blindness derives from some defect and loss or lies in an abundance and excess. In the same poem that meditates on the measure for all measuring, Hölderlin says: “King Oedipus has perhaps one eye too many.” Thus it might be that our unpoetic dwelling, its incapacity to take the measure, derives from a curious excess of frantic measuring and calculating.
That we dwell unpoetically, and in what way, we can in any case learn only if we know the poetic. Whether, and when, we may come to a turning point in our unpoetic dwelling is something we may expect to happen only if we remain heedful of the poetic. How and to what extent our doings can share in this turn we alone can prove, if we take the poetic seriously.
The poetic is the basic capacity for human dwelling. But man is capable of poetry at any time only to the degree to which his being is appropriate to that which itself has a liking for man and therefore needs his presence. Poetry is authentic or inauthentic according to the degree of this appropriation.
Pp. 225-6