“Knowledge is the key that unlocks all the doors. You can be green-skinned with yellow polka dots and come from Mars, but if you have knowledge that people need instead of beating you, they'll beat a path to your door.”
“I give this to you because it is the key that will unlock the door between your past and your future.”
“Beat on the doors until you get what you want. Beat on the walls until your fists bleed.”
“Patience and persistence are the keys... The keys to unlock doors of success... With these two virtues, you grow in reasoning and experience.”
“Every closed door isn't locked and even if it is...YOU just might have the key! Search within to unlock a world of possibilities!”
“Education is the key to unlock the golden door of freedom.”