лбом стенку не прошибешь

• ЛБОМ СТЕНУ (СТЕНКУ, СТЕНЬЛ) НЕ ПРОШИБЕШЬ{{}}

[saying]

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⇒ it is impossible, useless to oppose great force or the authorities (said when a person has to yield to circumstances and accept sth. imposed on him by those in power):

- ≈ it's (there's) no use beating your head against a (brick) wall;

- you can't fight guns with sticks;

- you can't fight a howitzer with a peashooter. Cf. you can't fight city hall.