The four sentinels that guard the doorway to heaven are:
Shanti (equanimity of mind),
Santosh (contentment),
Satsanga (company of those who tell us the way to Shanti and
Santosh) and
Sad-vichar (right enquiry so that we always keep our life
flowing in the right direction, keep our thoughts in the right direction.)
Swami Chidananda Saraswati (1916 – 2008) was the
president of the Divine Life Society in Rishikesh – associated with the Swami
Sivananda Ashram