A．It appears in your physiology.
B．It is in your value system.
C．It is emphasized by philosophers.
D．It carries its own beliefs.
A．It is the centre of the world.
B．It is not easy to reach.
C．It has no room for lies.
D．It is bright like the sun.
A．Try to get what you've missed.
B．Love the abundance you have.
C．Think of ways to be better.
D．Be satisfied with your past.