I am interested in who could be said to be the first atheist philosopher. Did all the ancient Greek philosophical big guns believe in gods, for example? More recently I know Hume published his atheist stuff anonymously for fear of reprisal and recrimination but before him the Elizabethan playwrights Christopher Marlowe and Thomas Kyd were "accused" of atheism so it was nothing new. So how far does it go back, especially as articulated by philosophers?
Thanks in advance for your answers.