David Hartley, Observations on Man (6th edition…
“ And if we suppose a number of persons thus making a progress in pure unmixed happiness, and capable both of expressing their own feelings, and of understanding those of others, by means of a perfect and adequate language, they might be like new senses and powers of perception to each other, and both give to and receive from each other happiness indefinitely. But as human life is, in fact, a mixture of happiness and misery, so all our languages must, from the difference of our associations, convey falsehood as well as truth, as above noted. ”
