According to Thomism, the natural sciences and theology are two distinct but complementary ways of understanding the world. The natural sciences investigate the physical world through observation and experimentation, while theology investigates the spiritual world through faith and reason.

Thomistic natural philosophy is based on several key principles, including the principle of causality (every event has a cause), the principle of finality (every being has a purpose), and the principle of teleology (the universe is ordered towards a specific goal).

According to Thomism, reason is the primary means of understanding the natural world. Reason allows us to observe the world, identify patterns, and formulate theories about how the world works.

Thomism holds that the natural world and the supernatural world are interconnected. The natural world is created by God and is subject to His laws, but it also contains traces of the supernatural, such as the human soul.

Thomas Aquinas is considered the most important figure in the development of Thomistic natural philosophy. His writings, such as the Summa Theologica, provide a comprehensive synthesis of Aristotelian philosophy and Christian theology.

Thomism holds that science and theology are complementary in understanding the natural world. Science provides empirical evidence about the natural world, while theology provides a framework for interpreting this evidence.

The four causes are a key concept in Thomistic natural philosophy. They are the material cause (the matter from which something is made), the formal cause (the shape or structure of something), the efficient cause (the agent that makes something), and the final cause (the purpose for which something is made).

Thomism holds that the soul is the form of the body. This means that the soul gives the body its essential characteristics and makes it a living being.

The cosmological argument is a key argument for the existence of God in Thomistic natural philosophy. It argues that the existence of the universe requires a first cause, which is God.

Thomism holds that faith and reason are complementary. Faith provides us with knowledge of truths that cannot be known through reason alone, while reason provides us with knowledge of truths that are accessible to natural human understanding.

Thomistic ethics is based on several key principles, including the principle of double effect, the principle of non-maleficence, and the principle of beneficence.

Thomism holds that natural law is complementary to divine law. Natural law provides us with a basic understanding of right and wrong, while divine law provides us with more specific moral guidance.

Thomistic political philosophy is based on several key concepts, including the common good, the principle of subsidiarity, and the principle of solidarity.

Thomism holds that church and state should cooperate in promoting the common good. The church provides spiritual guidance, while the state provides temporal guidance.

Thomas Aquinas is considered the most important figure in the development of Thomistic political philosophy. His writings, such as the Summa Theologica, provide a comprehensive synthesis of Aristotelian philosophy and Christian theology.