Freedom is a fundamental element of liberty; it's a concept, a value, and a feeling.

It's also an essential human requirement, and something most people agree is worth fighting for. But what does freedom really mean in our daily lives, and the lives of others? What does it require of us?

In 1941, Franklin D. Roosevelt explored these questions. Roosevelt – a master communicator (and frequent contributor to Liberty magazine) – delivered a State of the Union address to millions of Americans, as they gathered around radios in parlors and tenements, just as they had for his famous "fireside chats." In his familiar, reassuring voice he introduced the nation to a concept he called the Four Freedoms:

1. Freedom of speech and expression
2. Freedom of worship
3. Freedom from want
4. Freedom from fear

At the time, the country was reeling from depression and fearful of war. Roosevelt provided a powerful affirmation of shared values and a call to action to defend them. As freedoms were disappearing in Nazi-occupied Europe, Roosevelt reminded Americans that their commitment to freedom was the foundation for everything that would be asked of them in the coming years.

The Cost of Freedom

At the heart of Roosevelt's message is a curious paradox: the four freedoms are fundamentally at odds. Freedom of speech and worship involve only the individual, who makes a choice to act (or not), while freedom from want and fear requires society to take collective action, and for us to be responsible for one another. In fact, the freedom we enjoy as individuals is possible only in and through our community.

For most of us today, freedom represents doing what you want, when and how you want, without anyone interfering or stopping you. Freedom means you can be you. And it means you will let me be me. But freedom can't be absolute: it is not the absence of rules; and it is definitely not anarchy. Our freedom hangs in the tension between chaos and control, between I and us. With freedom comes responsibility: if we're allowed to do what we want, we're also responsible for what we do.

That's the catch.

If we accept a definition of freedom that allows everyone to be fully themselves, we should accept that there are some conditions that need to be met first. You can't be truly free if you're starving, or homeless, or sick. If we are to guarantee freedom, do we also need to guarantee all free people a level of basic well-being? That's a lot of responsibility.

Freedom For All?

Here in the "land of the free," we are often quick to celebrate the freedoms outlined by our founding fathers, while forgetting their original concept of freedom was reserved strictly for property-owning white men – women, slaves, and Native Americans, not so much. In many ways, America's unfinished history has been a process of giving more freedom to more people over time.

Freedom means different things to different people. But it also means different things to the same people at different times in their lives. And, like most big ideas, freedom depends on context.

Freedom can be all of these things and more

• Connecting with people and animals on the other side of the world
• The women of the Kurdistan Worker's Party (PKK) taking up arms against ISIS
• Traveling to gain empathy and understanding
• Debt-free living in a Tiny House
• Escaping danger to find safety in another land
• Empowering yourself to say no
• Saying nothing at all

The bumper stickers are true – freedom isn't free. It's costly and valuable, and it should be treasured and kept safe. We honor our freedom when we enjoy it, celebrate it, and share it. What does freedom mean to you? The last day of school? The first day of school? Share your idea of freedom with us below.