We must live as we think, otherwise we shall end up by thinking as we have lived.
There is only one thing infamous in love, and that is a falsehood.
Unhappiness indicates wrong thinking; just as ill health indicates a bad regimen.
Ideas are to literature what light is to painting.
There is only one way to be happy by means of the heart: not to have one.
A proof that experience is of no use, is that the end of one love does not prevent us from beginning another.