Included on the main page of this site is a Charles Koch quote:
“If not us, who? If not now, when?”
He used that in a letter to other plutocrats inviting them to attend the Kochapalooza.
A visitor to the site has advised me of what may be the origin, which makes the Chuckie Koch’s use of it all the more reprehensible:
If I am not for myself, who will be for me?
If I am not for others, what am I?
And if not now, when?
Jewish scholar & theologian (30 BC – 9 AD)