Authors:

The function of violence is to obtain reform by external means, the function of passive resistance, that is, soul-force, is to obtain it by growth from within, which, in its turn, is obtained by self-suffering, self-purification.

Mahatma Gandhi, Anthony J. Parel (1997). “Gandhi: 'Hind Swaraj' and Other Writings”, p.146, Cambridge University Press
The function of violence is to obtain reform by external means, the function of passive resistance, that is, soul-force, is to obtain it by growth from within, which, in its turn, is obtained by self-suffering,