Not every sort of wood is fit to make an arrow.
More French Proverbs:
If the sky were to fall we should catch plenty of larks.French
Tis a silly sheep that makes the wolf her confessor.
French
Don't teach fishes to swim.
French
He was born on a Sunday, he likes work ready done.
French
The worst is not always certain but it's very likely.
French
A house ready made and a wife to make.
French