Man is not man, but a wolf to those he does not know.
It is well for one to know more than he says
That which you know, know not; and that which you see, see not.
It is best to know the worst at once.
The evil that we know is best.
Know this, that troubles come swifter than the things we desire.
Know not what you know, and see not what you see. [Lat., Etiam illud quod scies nesciveris; Ne videris quod videris.]
There's no such thing, you know, as picking out the best woman: it's only a question of comparative badness, brother.