Speed is the glory of Horse (Ashva) . The majestic walk is the glory of elephant (Gaja) Being wise ('Chatur') is an asset to women (Naarya) and always being engaged in some work (Udyogo) suits the man.
Hunger, Thirst (Trut) and desire (Aasha) are like man's three wives. Until he is alive these three will never leave him or go else where. In comparison of the three, desire (Aasha) is a 'Maha Saadhvi' because it never ever leaves the man. Unlike hunger and thirst which disappear for some time after eating /drinking, desire is the thing which never disappeares from man's mind!!
Sacrifice your own interest for sake of your family, sacrifice family for village, sacrifice village for cause of nation and sacrifice everything for Atma.