The collected works of J.D. Eshelby provide a comprehensive insight into the significant contributions of the author to the fields of defect mechanics and micromechanics of inhomogeneous solids. Over a span of five decades, Eshelby's research has shaped the quantitative analysis of the mechanisms of plastic deformation and fracture. By integrating fundamental physical concepts into the analysis of the micromechanisms of deformations in solids, including the interactions between lattice defects and cracks, Eshelby has created a conceptual framework that enhances the understanding of complex interactions at the micro level. These interactions are crucial for the mechanical properties at the continuum level. His works have connected various disciplines and unified areas such as materials science, fracture mechanics, plasticity, and composite materials. This collection includes the unabridged works of Eshelby as well as forewords by renowned scientists that highlight the impact of his work on their own research fields.