I've always gone after seemingly impossible goals. And it's not entirely an irrational pursuit. Joseph Agassi, in “Science and society: studies in the sociology of science," says:
"...one chief reason for pursuing the seemingly unattainable may be that we do not know whether in principle it is attainable or not. We can even say, we do not know what our goals are--whether individually...or collectively..."
He says further that "...though endless search can be frustrating, and though peace of mind can be achieved with little or no search, we do have empirical testimony of lives devoted fruitfully and happily to tasks not yet attained and perhaps unattainable. Kepler's search for the harmony of the spheres and Einstein's search for a unified field theory are such instances, and by no means the only ones."
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