"If the Purana written by Vyasa were still existing, then it would be honoured as a “Sruti”. In the absence of this Purana and the one written by Lomaharshana, the eighteen Puranas that still exist cannot all be given the same place of honour; among them, the Vishnu and the Bhagwata Purana composed by accomplished yogis are definitely more precious and we must recognise that the Markandeya Purana written by a sage devoted to spiritual pursuits is more profound in Knowledge than either the Shiva or the Agni Purana."
January 1, 1970
https://en.wikiquote.org/wiki/Puranas