Without Naam one is blind and is being cheated:

Without the Naam-contact all your attachments are valueless, for nothing shall abide with you, whatever you see around you is nothing but delusive matter that keeps you in bondage.

Guru Arjan, Kanra M5

All pleasures and all delights are mere delusions, oh Nanak! Precious is the Naam; they that get not the Naam lose their life in vain.

Guru Arjan, Todi M5