N.J. Stat. § 59:1-2
The Legislature recognizes the inherently unfair and inequitable results which occur in the strict application of the traditional doctrine of sovereign immunity. On the other hand the Legislature recognizes that while a private entrepreneur may readily be held liable for negligence within the chosen ambit of his activity, the area within which government has the power to act for the public good is almost without limit and therefore government should not have the duty to do everything that might be done. Consequently, it is hereby declared to be the public policy of this State that public entities shall only be liable for their negligence within the limitations of this act and in accordance with the fair and uniform principles established herein. All of the provisions of this act should be construed with a view to carry out the above legislative declaration.
N.J.S. § 59:1-2