Looking for an Edward Murrow Quote

[Zoso318]

I was watching a program on history international a week ago about the nuke when it ended with an edward murrow quote when he was on the radio, it said something like how this moment is just a snapshot of something bigger, the 1933 depression, then he started naming important events of that era, then he started saying something about how unknowingly maybe mankind has reached midnight or something. It was a long quote and he said it on a radio broadcast in world war two in response to the nuclear bomb . I'd like to know the quote in more detail and maybe one of you history buffs can enlighten a noob on what exactly he said