For one who constantly meditates upon My presence within all persons, the bad tendencies of rivalry, envy, and abusiveness, along with false ego, are very quickly destroyed. 
(Lord Sri Krsna Srimad-Bhagavaram 11.29.15)
Marriage with a view to peaceful and virtuous life and with a view to procreate servants of the Lord is a good institution for a Vaisnava. Spiritual cultivation is the main object of life. Do everything that helps it and abstain from everything that thwarts the cultivation of the spirit.
(Srila Bhaktivinoda Thakura, Shree Caitanya Mahaprabhu: His Life and Precepts)
Birth and other transformations are undergone by the body bur never by the self, just as change occurs for the moon's phases but never for the moon, though the new-moon day may be called the moon's "death".
(Lord Balarama, Srimad-Bhagavaram 10.54.47)