"Courtesy, like grace and beauty, that which begets liking and inclination to love one another at the first sight, and in the very beginning of our acquaintance and familiarity; and, consequently, that which first opens the door for us to better ourselves by the example of others, if there be anything in the society worth notice"

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Based on first-hand evidence of your own senses - the improved health and later ages at which acquaintances die nowadays as compared with the past; the material goods that we now possess; the speed at which information, entertainment, and we ourselves move freely throughout the world - it seems to me that a person must be literally deaf and blind not to perceive that humanity is in a much better state than ever before.

— Julian Simon