“Honest differences are a healthy sign of progress.”

The optimal word here is "honest". There will always be differences. Within the scope of Gandhi's here paradigm — ABSOLUTELY ! (the inalienable right of liberty, free thought, expression/speech, religion, etc.). In a broader observation of life, progress may only be in the eye of the beholder. Are today's communists honest — they seem to be, if nothing more than to themselves or in their own minds. Under that scenario, socialists (communists vs. fascist by example) demonstrate a great deal of honest differences but not to any healthy sign of progress. Is "honest" here related to absolute truth or just personal thought and/or theocratic desire? Current socialists must propagate lies (either outright, by ignorant fabrication or by not accepting / hearing the whole truth, etc.) to fulfill their "honest differences" — is that a sign of healthy progress?

To attempt to eliminate all differences between people is futile.