 Bradley, Francis Herbert |  Dewey, John |  Emerson, Ralph Waldo |  evil: problem of |  existentialism |  Hegel, Georg Wilhelm Friedrich |  idealism |  James, William |  Kant, Immanuel |  Nietzsche, Friedrich |  Peirce, Charles Sanders |  pragmatism |  process philosophy |  rationalism vs. empiricism |  realism |  Russell, Bertrand |  Sartre, Jean-Paul |  Whitehead, Alfred North 