Ahimsa is a science. The word 'failure' has no place in the vocabulary of science.
There is no 'as far as possible' on the question of untouchability. If it is to go, it must go in its entirety from the temples as from everywhere else.
Genuine laughter is true eloquence and more effective than speech
Even as a tree has a single trunk, but many branches and leaves, there is one religion but any number of faiths.
You can't lead a true life without suffering
Civil disobedience does not admit of any violence or countenancing of violence directly or indirectly.