The man of system is apt to be very wise in his own conceit. In the great chess board of human society, every single piece has a principle of motion of its own altogether different from that which the legislature might choose to impress upon it
Adam SmithBut poverty, though it does not prevent the generation, is extremely unfavourable to the rearing of children. The tender plant is produced, but in so cold a soil, and so severe a climate, soon withers and dies.
Adam SmithA man must always live by his work, and his wages must at least be sufficient to maintain him. They must even upon most occasions be somewhat more; otherwise it would be impossible for him to bring up a family, and the race of such workmen could not last beyond the first generation.
Adam Smith