31. As with many legal principles , its force depends on the circumstances of the case. 32. New legal principles , even when applied retroactively, do not apply to cases already closed. 33. What legal principle explains the difference? 34. Critics like Wallace argue that the bill betrays fundamental American legal principles of fairness and compassion. 35. There is a further contradiction in the legal principles governing the water laws that do exist. 36. The legal principle behind this, Toobin notes, is called " proportionality ." 37. Federalists say they hope to change the American justice system substantially by exalting neutral legal principles . 38. Shari'a provides the legal principles upon which the law and legal procedure are based. 39. What is this legal principle called? 40. I do not think a legal principle which forbade recovery in these circumstances could be supported.