“ Crisis of the mind”is where the quote is from written by Paul Valéry
280 is the answer because 25% were sold on wednesday and to turn 25 into 100, you would have to multiply it by 4 which means you have to multiply 70 with four which is 280.
I think that Mrs. Auld followed her husband's advice to stop teaching Douglass to read in My Bondage and My Freedom because WIVES WERE EXPECTED TO OBEY THEIR HUSBANDS.
Douglass was a slave and according to Mr. Auld, slaves do not need to know how to read because they will not be able to perform their tasks well as a slave.