Spam, wonderful spam (bloody vikings!)
It is only the one established in the Self who can enjoy the pleasures of the world without getting caught in it. Examples are Janaka Krishna, Guru Gobind Singh.
My Sikhs shall enjoy the pleasures of the world and at the same time will be detached from it. (by constant attachment to Self or God)~ Guru Gobind Singh
Without the anchor of the Self, one is only bound to be tossed around like a superficial piece of wood here and there by the huge waves of sensory desires, in the whirlpool of the world.
OK. I was hoping you could clarify the Maharshi quotes, but no worries.
Returning to the OP, it does seem that turiya and Brahman are equivalent.