"No man can ever be secure until he has been forsaken by fortune."

-- Boethius

"The only security we have is our ability to fly by the seat of our pants."

-- Brad Blanton

"The only real security in life lies in relishing life's insecurity."

-- M. Scott Peck

"Our only security is our ability to change."

-- John Lilly

"There is no security on earth, there is only opportunity."

-- Douglas MacArthur