- Doubting Thomas 
May it merely be Tamas - deluded nature? 
- Sin  and  Svadharma 
Does a cannibal sin when he kills?
No! If it is your duty or station in life, you are right in doing it.
The cannibal does not incur sin - but he has not yet evolved into full manhood!
He is still half an animal.
 
- Nature 
Why can a dog bark and not you?
Because it is dog's nature and not my nature!
That is the proper use of the word 'nature'.
 
- In  Madagascar 
There is more food on the table than cutlery.
There is more love in their manners than courtesy.
 
- Namesake 
This word has perhaps originated in an expression like this: 'Please help him (someone who has your own name) at least for his name's sake.'
The help part of it has dropped in course of time and the two words have become one.