sincere quotes

Sois donc ami since'  re ou since'  re ennemi, Et ne reste pas tra|"tre et fide'  le a'   demi. Be either a sincere friend or a sincere enemy, And never be half-traitor and half-faithful.

-Victor Marie Hugo
  Cromwell, act1, sc.1.

I am sincere; and my intentions are perfectly honourable. I think you will accept the fact that I'm an Englishman as a guarantee that I am not a man to act hastily or romantically.

- George Bernard Shaw
  Tom Broadbent to Nora Reilly. John Bull's Other Island, act 2.