Some links to a few articles you might find interesting...
Darwin, Charles - On The Origin Of Species
Descartes, Rene - Meditations On First Philosophy
Homer - The Iliad
Homer - The Odyssey
Kant, Immanuel - "What is Enlightenment?"
Marx, Karl - The Communist Manifesto
Paine, Thomas - Common Sense
Plato - Collected Works
Poe, Edgar Allan - Collected Works
Shakespeare, William - Collected Works
Voltaire - Candide