Crede mihi, distant mores a carmine nostro –
vita verecunda est, Musa iocosa mea –
magnaque pars mendax operum est et ficta meorum;
plus sibi permisit compositore suo.
(Ovid, Tristia 2.353-356)
I assure you, my character differs from my verse (my life is moral, my muse is gay), and most of my work, unreal and fictitious, has allowed itself more licence than its author has had. (tr. Arthur Leslie Wheeler)