“Stop wasting your time looking for the key to happiness… the door is open and unlocked… just walk through it.”

“~Love is the master key that unlocks the door to eternal happiness~”

“You know Nana, I searched and searched, but could never find the key that unlocked the way. And now that I've stopped looking, I've finally found it. Maybe the door will open for me.”

“If getting is the key to your happiness your key will open few doors. If giving is the key to your happiness you will find few doors locked.”

“A brick could be used as a key to unlock a door disguised as a brick wall. The security in the lock lies not with a one-of-a-kind key, but with a key that looks like hundreds of other potential keys that make up the door.
”

“Find the Key ! Find the Key ! If you want to open the Doors of Heaven ! Without which, you can at best, look from outside, like the pauper looking in through the window at your food when hungry. Find the Key !”