What are examples of proverbs that are contradictory?

Answer:
The great wall is only strong when it is at its weakest.

If you love something, let it go.
_________
Also possible are two different proverbs that seem to be saying opposite things:

Be not the first to put the old aside, nor yet the last by whom the new is tried.
vs:
Nothing ventured, nothing gained.
Contributor: Emdrgreg
First answer by ID1311305478. Last edit by Emdrgreg. Contributor trust: 2540 [recommend contributor recommended]. Question popularity: 1 [recommend question].