The essence of a vow does not consist in the difficulty of its performance but in the determination behind it unflinchingly to stick to it in the teeth of difficulties.
The weapon of nonviolence does not need supermen or superwomen to wield it; even beings of common clay can use it and have used it before this with success.
In this age of the rule of brute force, it is almost impossible for anyone to believe that any one else could possibly reject the law of the final supremacy of brute force.