“The point of the Fourth Amendment, which often is not grasped by zealous officers, is not that it denies law enforcement the support . . . .”

“The point of the Fourth Amendment, which often is not grasped by zealous officers, is not that it denies law enforcement the support of the usual inferences which reasonable men draw from evidence. Its protection consists in requiring that those inferences be drawn by a neutral and detached magistrate instead of being judged by the officer engaged in the often competitive enterprise of ferreting out crime.”

-Justice Robert H. Jackson in Johnson v. U. S. 333 U.S. 10 (1948)