 Then, typically, he goes on to explain how any such principle reflects various psychological and sociological presuppositions—for example, that sane adults are the best judges of their own interests—and that these are only approximate generalizations and subject to crucial limitations. The psychological assumption that “every one can best take care of his own interest” and the sociological one that “the common welfare is best attained by each pursuing exclusively his own welfare and that of his family in a thoroughly alert and intelligent manner”—both essential to the case for Laissez Faire—end up being very heavily qualified and subject to so many exceptions that it is scarcely evident what Sidgwick means when he calls individualism “in the main sound.” The list of qualifications covers everything from education, defense, child care, poor relief, public works, collective bargaining, environmental protections, and more. He stresses two cases that, he urges, perspicuously point up the problems with the individualistic principle: “the humane treatment of lunatics, and the prevention of cruelty to the inferior animals.” Such restrictions do not aim at securing the freedom of the lunatics or the animals, but are a “one-sided restraint of the freedom of action of men with a view to the greatest happiness of the aggregate of sentient beings.” An unfortunate—but alas, revealing—note adds that the “protection of inferior races of men will be considered in a subsequent chapter” (Sidgwick 1919: 141–42).