This text critically examines the traditional philosophical concepts of monism, dualism, and pluralism, highlighting their fundamental limitations in describing the complex nature of reality. The author argues that these categorical labels are often misleading and frequently fail when applied to the work of specific thinkers. Consistent monism is deemed impossible, as it cannot satisfactorily explain how a primary principle or 'One' leads to the multiplicity of things evidenced by human experience. Conversely, pluralism in its extreme form denies the autonomy of higher-order entities, reducing them to mere heaps of components. Dualism consistently struggles with the problem of interaction between distinct types of reality, such as mind and body. The text illustrates these theoretical difficulties through various systems: Emanuel Rádl’s dualism between values and facts, Karl Jaspers’ distinction between 'Dasein' and 'existence,' and Johann Friedrich Herbart’s pluralism. Ultimately, the document suggests that these philosophical labels are conceptually incomplete without considering each philosopher’s unique interpretative context.