Kurma

"Birds do not perch on trees where there is no fruit; wild beasts leave the forests when the leaves of the trees have fallen and there is no more shade for them; insects leave plants where there are no Ionger flowers; leeches leave springs which no longer flow; women leave men who have become old or poverty-stricken; a minister leaves the service of an obstinate king; servants leave a master who has been reduced to poverty. Thus it is that self-interest is the motive of everything in this world." - Niti Sastra