When, in the course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth the separate and equal station to which the laws of nature and of nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.
"Humans suffer from self-centred notions as to the nature of life. Humans assume that alien life forms should conform to standards that match our own, including logic and morality. Even among humans, morality is ignored when expedient. Why should we expect more from an alien life form than we demand from ourselves?"
Let us suppose that an ichthyologist is exploring the life of the ocean. He casts a net into the water and brings up a fishy assortment. Surveying his catch, he proceeds in the usual manner of a scientist to systematize what it reveals. He arrives at two generalizations: (1) No sea-creature is less than two inches long. (2) All sea-creatures have gills. These are both true of his catch, and he assumes tentatively that they will remain true however often he repeats it. In applying this analogy, the catch stands for the body of knowledge which constitutes physical science, and the net for the sensory and intellectual equipment which we use in obtaining it. The casting of the net corresponds to observation; for knowledge which has not been or could not be obtained by observation is not admitted into physical science. An onlooker may object that the first generalization is wrong. "There are plenty of sea-creatures under two inches long, only your net is not adapted to catch them." The icthyologist dismisses this objection contemptuously. "Anything uncatchable by my net is ipso facto outside the scope of icthyological knowledge. In short, "what my net can't catch isn't fish." Or-to translate the analogy-"If you are not simply guessing, you are claiming a knowledge of the physical universe discovered in some other way than by the methods of physical science, and admittedly unverifiable by such methods. You are a metaphysician. Bah!"
Sir Arthur Stanley Eddington (1882 - 1944)
Source: The Philosophy of Physical Science, The University of Michigan Press, 1958
Do not assume that he who seeks to comfort you now, lives untroubled among the simple and quiet words that sometimes do you good. His life may also have much sadness and difficulty, that remains far beyond yours. Were it otherwise, he would never have been able to find these words.