Stories From The Vishnu Purana

Visnu Purana is one of the six sattvika Puranas. This is easily
understood because the entire literature is aimed at making
one understand the simple truth that Lord Vasnu, being the
origin of everything, is one without a second. In other words,
there is nothing in existence separate from Lord Visnu.

Author : Srila Krsna Dvaidayana Vedavyasa