Reward and punishment are said to be the two hinges upon which all goverments turn? How are the people rewarded in lilliput?

From the text:

Although we usually call reward and punishment the two hinges upon which all government turns, yet I could never observe this maxim to be put in practice by any nation except that of Lilliput. Whoever can there bring sufficient proof that he hath strictly observed the laws of his country for seventy-three moons, hath a claim to certain privileges, according to his quality and condition of life, with a proportionable sum of out of a fund appropriated for that use; he likewise acquires the title of snillpall, or legal, which is added to his name, but doth not descend to his posterity. And these people thought it a prodigious defect of policy among us, when I told them that our laws were enforced only by penalties, without any mention of reward. It is upon this account that the image of Justice, in their courts of judicature, is formed with six eyes, two before, as many behind, and on each side one, to signify circumspection, with a bag of gold open in her right hand, and a sword sheath in her left, to show she was more disposed to reward than to punish.