Philosophy Contradiction

My task is to write a critical reply that poses a question and contradicts the writer and argues that his theory might have a few loop holes, this is going be to be a 1-2 page paper with just 300 words to one of the following readings : 

 Joel Feinberg, "A Logic Lesson"

: Bertrand Russell, "The Value of Philosophy (Links to an external site.)" / Immanuel Kant, "An Answer to the Question: What Is Enlightenment? (Links to an external site.)"

: Plato, Republic

 St. Augustine, Confessions / Friedrich Nietzsche, Thus Spoke Zarathustra

 Plato, Phaedo and Phaedrus / Thomas Nagel, "Death (Links to an external site.)"

: David Hume, A Treatise of Human Nature (Links to an external site.) / Derek Parfit, "Divided Minds and the Nature of Persons (Links to an external site.)"