Ce qui me lie, c’est ma folie = Straw bands will tie a fool’s hands.
Fond
Je fais fond sur vous = I rely on you.
Il sait cette langue à fond = He knows that language thoroughly.
Il est ruiné de fond en comble = He is utterly ruined.
Au fond, il a tort = He is wrong in reality.
Courir à fond de train = To run at the top of one’s speed.
Fonds
Article de fonds = Leading article (in a newspaper).