"I value the friend who for me finds time on his calendar, but I cherish the friend who for me does not consult his calendar" by Robert Brault
I have some friends like that. All I have to say is I need you and there they are. We make plans most of the time checking our calendars.... But when it comes down to it.. When I say "HEY" they say "Where". There have been times when they knew I need them before I knew I needed them.
So if you have some friends like that out there, hold on to them. Plain and Simple Cherish them.
I might have some more later, but wanted to get that quote out there.