For every action, there's reaction. 
If you sow corn, you reap corn. 
In pairs lives the world,  
As good, bad, hot or cold. 
 
If every one is good 
And no one is bad,  
How to judge a good 
Between every one good?  
 
If every one is man 
And there is no woman 
How a progeny be seen 
In the men's world clean?  
 
If every day remains hot 
And the cold remains not 
How the heat be blown out 
With the cold that exist not?  
 
If the world is full of hate,  
And the love goes abate 
How bad can be its fate 
With all eyes ever on hate?  
 
In pairs, all things coexist. 
Behold, this is the gist 
Of the Holy orders, just 
One should know at least.
Rajaram Ramachandran
http://www.poemhunter.com/poem/a-pair-of-points/