What does the phrase "for every up, there is a down" mean?

Question: What does the phrase "for every up, there is a down" mean!?
Best Answer - Chosen by Asker:

For every action there is a reaction!. What goes up, must come down!. It's a matter of balance!. There can be no positive without a negative!.

I can't do something good, without something bad happening somewhere else!. Not sure I agree with that statement though!.Www@QuestionHome@Com

It would seem that many philosophers have long known intuitively that nature tends to operate in a dualistic fashion at a fundamental level!.
It would seem that in more recent history physics is starting to demonstrate the validity of this ancient philosophical theme!.

http://en!.wikipedia!.org/wiki/Up_quarkWww@QuestionHome@Com

Always consider the opposite view of any opinion, fact, statement, or decision in your life!. Even if doing so contradicts what you 'feel' is the case!. More people are ruined by being coerced thru their beliefs, then their open-mindedness to consider exceptions!Www@QuestionHome@Com

Karma!.!. or even kinetic energy!. For everything that in life there are consequences!. For every high there is a relapse!. for every drunk there is a hangoverWww@QuestionHome@Com

Every positive thing that happens there is always a negative!. Not necessarily equal positive and negative!.Www@QuestionHome@Com

It's basically saying that for every good thing that happens, there will be a negative one as well!.

Kind of like the rule in physics where every action has an opposite and equal reaction!. Www@QuestionHome@Com

with good comes bad
with every good thing a bad is usually lingering close by Www@QuestionHome@Com

Karmic balance!. Not always true, either- or not in any practical way, at least!.Www@QuestionHome@Com

There is always a negative side!.Www@QuestionHome@Com