What is the purpose of Steve Jobs’s commencement speech? to inform listeners of his latest innovation
to persuade listeners to pursue higher education
to persuade listeners to thank their parents
to entertain listeners with stories and insights

Read the opening lines of sojourner truth's speech "ain't i a woman? " well, children, where there is so much racket there must be something out of kilter. i think that 'twixt the negroes of the south and the women at the north, all talking about rights, the white men will be in a fix pretty soon. but what's all this here talking about? what tone do these lines convey?