There has been endless speaking and writing about ultimate or final truth. It may as well be admitted at once, and without reservation, that mortal man, gathering knowledge through imperfect senses—his only avenues to truth—must remain content, in many fields of endeavor, with partial truth … Nevertheless, the knowledge gained by the bare eye, or by the aid of instruments, reveals truth—partial but glorious truth, fit to stand by the side of all other truth.
