Life in this world, called Samsara, is described in Gita in many ways.
Samsara is like a pipal tree (asvatha vrksha), says 15.1
oordhwamoolam adhahshAkham ashvattham prAhuh avyayam
chandAmsi yasya parnAni yah tam veda sah vedavit ||15.1||
"They (wise people) speak of the indestructible Peepul Tree (Ficus
Religiosa) having its root above and branches below, whose leaves are
the Vedas; he who knows it is a Veda-knower."
The tree of life has 'roots' above meaning it has its sources or Origin as
the Infinite Reality of Brahman. Life is the 'asvatha' as it is constantly
changing. Asvattha etymologically means that which does not stay the same
tomorrow! Even the Sanskrit word Vrksa for the tree etymologically means
'that which can be cut'. It is so true of the worldly life which can be cut
asunder by detachment and Knowledge.
The tree-of-multiplicity that has seemingly sprung forth from the Infinite
Consciousness Divine, can be cut down by shifting our attention from the Tree
to the Divine.
Luckily, we who are educated in modern universities, have a similar use of the
term "tree" in our history text books. The 'family trees' of kings and
dynasties are, without any exception, shown as branching down from their
ancestral 'source'. Similarly, the Tree-of-Samsara has its roots UP in the
divine Consciousness. A tree holds itself up and gets nourished by its roots;
similarly, the 'experiences' of change and 'experiencer' of them are all
established in the Infinite and draw their sustenance from It alone.
For this tree-of-life "THE VEDAS THEMSELVES ARE THE LEAVES" -- Veda means
'knowledge'. Knowledge does bring forth a greater spirit of dynamism of life
into the world.
Leaves are areas from which the water contents get evaporated in all trees, and
this in its turn, creates the 'osmotic-pressure' in the roots and facilitates
the roots to draw more quantity of nourishment from the earth. Cut down the
leaves of the tree and its growth is immediately
stunted; the larger the number of branches and leaves, the greater is the
tree's dimension and growth. Where there is greater knowledge, there we are
sure to find a greater flare of manifest-life.
HE WHO KNOWS IT, IS A KNOWER OF THE VEDA - He alone, who has realised not only
the Aswatha-tree, but also the Higher, from which derives its existence, is
the one who has filled his knowledge of the Vedas.
Men are attached to the flashes of joy in samsara. The scriptures show
to us the other side of the story.
kim punah brAhmanAh punyAh bhaktAh rAjarshayah tathA
anityam asukham lokam imam prApya bhajasva mAm ||9.33||
"How much more (easily) then the holy BRAHMINS, and devoted Royal saints
(attain the goal). Having reached (obtained) this impermanent and joy-
less world, do worship Me devoutly."
"HAVING ATTAINED THIS TRANSIENT AND JOYLESS WORLD, WORSHIP ME DEVOUTLY". This
instruction to Arjuna is an instruction for all, since, in the
Geeta if Lord Krishna represents the Self, Arjuna represents the confused man
standing impotent against the challenges of life.
Life is lived in a field always constituted of objects, instruments, and mental
moods. These three are ever in a state of change. Naturally, the flickering
joys that come to us in life prove to be transient. And the intervals between
any two experiences of joy are only FULL OF PAIN.
In tune with the positive and energising philosophy of optimism which the Geeta
preaches, here Krishna declares the world to be a mere pit of sorrows, or a
ditch of despair, or a mire of disappointments, or a field of joylessness
HAVING REACHED THIS WORLD, IMPERMANENT AND JOYLESS, Krishna advises Arjuna,
that he must occupy himself in the worship of the Self.
In 8.15, Sri Krishna calls the samsara as a house of pain and ephemeral.