In our culture we think of freedom as the absence of restraint. That's freedom from. But there is another and higher kind of freedom. That is freedom to. This is the freedom as fullness of capacity, and it often involves restriction and restraint. You have to chain yourself to the piano and practice for year after year if you want to have the freedom to really play. You have to chain yourself to a certain set of virtuous habits so you don't become slave to your destructive desires — the desire for alcohol, the desire for approval, the desire to lie in bed all day. As the theologian Tim Keller puts it, real freedom "is not so much the absence of restrictions as finding the right ones."