Vivekachudamani 5

itah ko nivasti mudhatma yastu svarthe pramadyati | 
durlabham manusyam deham prapya tatrapi paurusam 
(Vivekachudamani 5) 

 Is there a greater fool than the person who, having got the rare chance of a human birth and there too, the masculine qualities of the head and heart, falls short in his efforts to realize his own highest good?  
Prahlāda Mahārāja when he was five years old boy, he said :- 

 kaumāra ācaret prājño 
dharmān bhāgavatān iha 
durlabhaṁ mānuṣaṁ 
janma tad apy adhruvam (arthadam) 

 "This life is very valuable, very rare, but it is also temporary." Because it is very rarely obtained, it is not permanent. It is also temporary like cats and dogs. They have got their temporary body. But the one significance of this body is arthadam. Arthadam means you can derive the greatest value in this life. Arthadam. Artha means money, and paramartha means spiritual consciousness. That is also artha. So one should be engaged for earning money because the body requires material necessities. That's all right. But his real attention should be how to achieve spiritual consciousness, or to understand the Supreme Personality Krishna. That is arthadam. That is the value of life. If we fail to understand the motive of this human life, we will waste our golden opportunity to understand the Supreme Personality of Godhead. By failing to understand the motive of human life we have to suffer again and again.