I'm not sure but I think it's either:
'That gallant spirit hath aspir'd the clouds.'
Or
'Romeo: this days black fate on more days doth depend.'
Or
'This but begins the woe others must end.'
Because they sound like they are mentioning about the future play/life, they are not deliberately saying it, they are speaking in clues and hints.
Hope this helps in anyway possible. (Haven't done this play in 3yrs. And bad in the quotes, but u hope this helps.)
A. Posters about safety hangs in every office in Town Hall.
D) The discovery that the Universe is expanding was the greatest discovery of the century.