Sankaracarya's Vivekachudamani 401

असत्कल्पो विकल्पोऽयं विश्वमित्येकवस्तुनि ।

निर्विकारे निराकारे निर्विशेषे भिदा कुतः ॥

asatkalpo vikalpo'yaṃ viśvamityekavastuni |

nirvikāre nirākāre nirviśeṣe bhidā kutaḥ ||

(Sankaracarya's Vivekachudamani 401)

In One Reality, the conception of the universe is a mere imagination. How can there be any distinctions in the reality which is Changeless, Formless, and quality less?

In this sloka Sripada Sankaracarya explaining that the material world is full of maya or illusion. Nothing is real. Even so-called love between a man and woman too not real. Unless we focus our real love towards what is real. The only real in the entire creation is the Supreme Lord who is changeless, formless or with form and not someone who can be measured (quality).