Definition of the spirit is willing but the flesh is weak in English:

the spirit is willing but the flesh is weak

phrase

proverb
  • Someone has good intentions but fails to live up to them.

    • ‘When the spirit is willing but the flesh is weak, let these 100% cotton panties do the talking for you, ‘What Would Jesus Do?’’
    • ‘On the contrary, it is an all too common experience that your evaluative commitments lead you on one path but that you go nonetheless on another: the spirit is willing but the flesh is weak.’
    • ‘Who knows, the spirit is willing but the flesh is weak and again subject to pain in the nether regions from the saddle.’