fast, so you can be slow; slow, so you can be fast.

up, so you can be down; down, so you can be up.

deep, so you can be shallow; shallow, so you can be deep.

love, so you can be hate. hate, so you can be love.

work, so you can be rest. rest, so you can be work.

smart, so you can be stupid. stupid, so you can be smart.

simple, so you can be complicated; complicated, so you can be simple.

busy, so you can be free; free, so you can be busy.

free to travel in between, that's a kind of freedom.