Humans whether of any types,fulfils their primary needs.The primary needs of the body are nutrition,rest,fear and sex.These
are basic processes which are the part of human lifespan.These all processes are not learnt its a natural process.In animals also these process are seen in the same order.Then how can human and animal be distinguished?Basically we are all animals,but humans are rational.Actually the main difference is "intelligence",due to which humans are rational.Humans can practice idealism and control all needs by "willpower".But can neverget free from their basic nature.Even a stray dog has to go through these processes.Theyare tendtofind foodjust to live.And take rest to find food.On showing cane they run out because of fear for existence.Reproduce for survival of their breed.Likewise humans also undergo such life processes.Fear is necessary,collection of food is necessary
for humans.For a sound body rest is necessary and for having a secured property a successor is necessary.The way humans can use their brain animals cannot,they get success by thinking what' s good and bad,primary and secondaryetc.,In the indian mythology their are four types of efforts,which are to be done by each human:
a.religion;b.earn living byfair means;c.sex;d.Immortality.Out of these a&b are primary and b&c are secondary efforts,a and b are related to meditation.Meditation means medication of soul.Its just like a nutritionofsoul.It nourishes the soul.It is well and good if one realises Him(GOD)in this very life,on the contrary one fails to know Him in any life,he will be agreat loser.Men of strong determination who seek for the Lord in every creature attain immortality on casting off this body.