The first koan do not have rational answers. They are techniques devised over the millennia for triggering an actual experience.
Huston SmithAs the twentieth century began, science equaled a materialistic worldview. As the twenty-first century began, the worldview of science, at least of physics and astronomy, may have traded place with that of religion. Consider Einstein's famous equation E = mc2. Nothing of matter dies but continues on in another form, elsewhere. The church divines and theologians for two thousand years have devised arguments and "proofs" of immortality but nothing equal to this.
Huston SmithHuman intelligence is a reflection of the intelligence that produces everything. In knowing, we are simply extending the intelligence that comes to and constitutes us. We mimic the mind of God, so to speak. Or better, we continue and extend it.
Huston Smith