不犯二不可能不疯癫不可以
[bù fàn èr bù kĕ néng bù fēng diān bù kĕ yĭ]
Roughly meaning 'Without being foolish or going mad, it cannot be done', it could be expressing the need or wish to act beyond common sense or norms in order to accomplish something extraordinary, reflecting an unconventional personality.