"The Indian National Congress was founded on the basis of safety valve theory, to protect the British Government from threats." Which leader said that?

Lala Lajpat Rai propounded the 'Safety Valve Theory' regarding the birth of the Indian National Congress in his 1916 work 'Young India', arguing that the Congress was conceived by A.O. Hume and British viceroy Dufferin to safely dissipate Indian nationalist discontent.