He is always tilting at windmills, trying to change things that are beyond his control.
Он всегда сражается с ветряными мельницами, пытаясь изменить то, что вне его контроля.
Definitions
To engage in a futile or misguided struggle against imaginary or exaggerated adversaries, often inspired by the story of Don Quixote, who mistook windmills for giants.
