What are “Directive Principles”? Why can Directive Principles not be ignored by a government even though they are not justiciable?

Directive Principles: The ‘Directive Principle of State Policy’ are ‘guidelines’ or ‘directives’ given by the Constitution to the central and state governments to adopt such policies as to improve the condition of their countrymen. If these principles are followed, a welfare state which ensures justice, liberty and equality can be established. The Directive Principles are not justiciable because we cannot take recourse to law for their implementation. They do have a moral sanctioin behind them but not a legal one. If the Fundamental Rights of a person are violated, he has a right to move the court. The Directive Principles have no legal remedies.