So the common factor of animal life and human life is these four principles of bodily demands, namely that we require to eat, and we require to sleep, we require some defensive measures for protecting ourself from the enemies, and we require some extent of sense gratification. That is the needs of my body. They are not the needs of my self as I am, spirit soul.
Now, if I want to get rid of this bodily encagement or the threefold miseries of material existence, then I must put myself under treatment. Just like a diseased man goes to a physician for treatment to get out of, get relief from the sufferings of the disease, similarly, our material existence consisting of threefold miseries and birth, death, old age, and diseases... If we are actually conscious for our happiness, we must make a permanent solution of these miseries. That is the mission of human life. So for making that mission fulfilled, we have got developed consciousness than the animals. That developed consciousness should not be misused only for the animal propensities of life. That is the whole thing.