Plato’s Alcibiades-1 is being researched in order to illustrate the difficulty of defining good and just actions, especially in the context of existence of ideal and real worlds. The concept of common moral values is questioned, as decision-making often involves ethical dilemmas. The principle of double effect (allowing base consequence for good purpose) is discussed and questioned in more complex situations. The aforementioned problems are discussed in their interaction. The article challenges simplistic justifications for war and emphasizes the need for critical reflection on the morality of conflict. Philosophers like Heraclitus saw war as a necessary part of progress. Hobbes viewed a state of nature as constant war of all against all, driven by self-interest.