On that same afternoon the Boston Female Anti-Slavery Society held a memorable meeting at the house of Francis Jackson.

It was then that Harriet Martineau, another foreign emissary, avowed her entire agreement with the principles of the Abolitionists, which subjected her to social ostracism, and to unlimited abuse from the pro-slavery press of the city.
The new hatred of slavery which the mob had aroused in Boston found heroic expression in a letter of Francis Jackson's replying to a vote of thanks of the Massachusetts Anti-Slavery Society to him for his hospitality to the ladies after their meeting was broken up by the mob.
Mr.Jackson in his answer points with emphasis to the fact that his hospitality had a double aim, one was the accommodation of the ladies, the other the preservation of the right of free discussion.

In his regard a foundation principle of free institutions had been assailed.
"Happily," he shrewdly observed, "one point seems already to be gaining universal assent, that slavery cannot long survive free discussion.
Hence the efforts of the friends, and apologists of slavery to break down this right.

And hence the immense stake which the enemies of slavery hold, in behalf of freedom and mankind, in its preservation.

The contest is, therefore, substantially between liberty and slavery.
"As slavery cannot exist with free discussion, so neither can liberty breathe without it.