Without Naam one is in misery:

The Naam is the only companion after death, and without It, there is the bondage of Death.

Guru Nanak, Gauri M1

All cunning and cleverness prove futile and one departs with tearful eyes, oh Nanak! By forgetting the Naam, one gets no relief at His door. 

Guru Nanak, Sri Rag M1

He alone suffers from penury and want, saith Kabir, Who has in his heart no love for the Naam. 

Kabir, Bhairon Kabir