Animal experimentation is the blackest of all the black crimes that a man is at present committing... We should be able to refuse to live if the price of living be the torture of sentient beings... I abhor [animal] experimentation with my whole soul. All the scientific discoveries stained with innocent blood I count as of no consequence... The greatness of a nation and its moral progress can be judged by the way its animals are treated.

Abstract truth has no value unless it incarnates in human beings who represent it, by proving their readiness to die for it.

The moment the slave resolves that he will no longer be a slave, his fetters fall. Freedom and slavery are mental states.

Of all the superstitions that affect India, none is so great as that a knowledge of the English language is necessary for imbibing ideas of liberty and developing accuracy to thought.

Unless all the discoveries that you make have the welfare of the poor as the end in view, all your workshops will be really no better than Satan's workshops.

A selfish basis would not serve the purpose of taking a man higher and higher along the paths of evolution.

My work will be finished if I succeed in carrying conviction to the human family that every man or woman, however weak in body, is the guardian of his or her self-respect and liberty.