Ramakrishna

One must have for god the yearning of a child. the child sees nothing but confusion when his mother is away. you may try to cajole him by putting a sweetmeat in his hand; but he will not be fooled. 

He only says, ‘no, I want to go to my mother.’ one must feel such yearning for god. ah, what yearning! how restless a child feels for his mother! nothing can make him forget his mother. he to whom the enjoyment of worldly happiness appears tasteless, he who takes no delight in anything of the world—money, name, creature comforts, sense pleasure, becomes sincerely grief-stricken for the vision of the mother. and to him alone the Mother comes running, leaving all her other duties.