Epistemology mirrors reality but notperfectly, and in the process molds reality butnot exactly as intended or anticipated. Horizontal interconnections also exist betweenand among epistemology, ideology, theory andpraxiology. However, these relations areneither deductive nor deterministic in naturebut are merely resonant, and then unclear,ambiguous and confounded. In this paper, thepoint is made that we need a grand reflectionon both our paradigms of reality and ourpredicaments of life as lived, to deal with thediscontent of humanity at this moment of thehistory of our civilization, (...) and to engage inpraxis ``to act on our world and to reconstructit'' to make it moral, just and more humane. Toundertake such a grand reflection, we need apractical philosophy of knowledge – that is, apractical epistemology – to bridge across themultiple epistemological approaches nowcrowding our discussions. An epistemictriangle formed by systems thinking,constructivist thinking, and dialecticalthinking is offered to serve as the startingpoint of crystallization for building a commonground for epistemologies. It is shown how suchan epistemological diagram could be first usedto develop a minimum ideological consensus andthen to bring orderliness to the chaos ofcontemporary themes of our civilization andissues of education and culture within andacross nations. Finally, an agenda foreducational leadership for educational practiceis offered to fit the needs of the globalcommunity of nations as we enter thetwenty-first century. (shrink)