Thomas Jefferson's argument in the Declaration of Independence emphasizes individual rights and freedoms as part of the foundation of a just society. One key example of this idea is that "all men are created equal," meaning that everyone should be treated equally and have an equal chance to pursue life, liberty, and happiness. Another example is that individuals have a natural right to life, liberty, and the pursuit of happiness. Jefferson also argued that governments have a duty to secure these rights for their citizens, which could only be done through limited and just powers. These individual rights are essential for preserving a just and democratic society, and Jefferson believed that without them, tyranny would prevail.