This paper provides an overview of the fundamental principles of social sciences, encompassing a wide range of academic disciplines dedicated to studying human society and human relationships. Drawing from the author’s understanding of social sciences, it offers a comprehensive examination of key concepts and highlights the significance of social science theories and practices. The paper begins by elucidating the definitions of social sciences, emphasizing their interdisciplinary nature and their focus on understanding societal dynamics. It explores the contributions of major thinkers in the field of social sciences, showcasing their intellectual impact and influential ideas. Furthermore, it presents a selection of notable social science thinkers from the 21st century, illustrating the ongoing evolution of the discipline. A core aspect of the paper focuses on the significant role of social scientists in contributing to societal development. It explores their diverse areas of expertise and the application of their research findings to address social issues and shape public policies. Additionally, the paper delves into the main theories and theoretical developments within social sciences, including the theory of governance, governmentality, network theory, and environmentalism. It specifically addresses the intersection of social sciences with climate change, highlighting the unique challenges and perspectives offered by this field. Sustainable development emerges as a prominent discipline within social sciences, with its emphasis on balancing economic growth, social equity, and environmental protection. The paper explores its relevance in addressing pressing global challenges. Moreover, it examines the emergence of new theories and practices within social sciences, presenting a glimpse of the evolving landscape of research and scholarship. Considering the future direction of social science research and practices, the paper offers insights into potential areas of exploration and the evolving nature of research methodologies. It addresses key research questions, such as what, why, how, when, where, and for whom, providing a framework for comprehensive inquiry. This paper provides a broad overview of social sciences, elucidating key principles, theories, and notable contributions to societal development. By examining the past and present, it also outlines the potential future trajectory of social science research and practices, shedding light on the significance and relevance of this dynamic field.