15) It is germane to point out here that individual liberty is a cherished right that is one of most valuable fundamental rights guaranteed by our Constitution to citizens of the country. In the scheme of Constitution, utmost importance has been given to life and personal liberty of individual. Article 21 of the Constitution provides that no person shall be deprived of his life and personal liberty except according to procedure established. In the matter of preventive detention, there is deprivation of liberty, therefore, safeguards provided by Article 22 of the Constitution of the India, have to be scrupulously adhered to. Procedural reasonableness, which is invoked, cannot have any abstract standard or general pattern of reasonableness. The nature of the right infringed, the underlying purpose of the restrictions imposed, the extent and urgency of the evil sought to be remedied thereby, the disproportion of the imposition, the prevailing conditions at the time, all provide the basis for considering the reasonableness of a particular provision. The procedure embodied in the Act has to be judged in the context of the urgency and the magnitude of the problem, the underlying purpose of the restrictions and the prevailing conditions.