English proverbs

Proverbs are short sayings that explain a fact or a truth. Some of them are quite easy to understand: "a stitch in time saves nine" (i.e. do a small job now before it becomes bigger or more difficult), and some have equivalents in other languages.

But others can seem so old-fashioned that their meaning is hard to work out.

What do "It's an ill wind that blows no good" and "It's a long road that has no turning" mean? (See the question in the Help Me! forum.)

I don't think I have ever heard anyone use these, and I'm not 100% sure of the meaning. Are there any proverbs that you particularly like or hate in English?