But it turns out the environment is very critical for this, and you can only define an essential or non essential gene based on exactly what's in the environment.

I know very well that this is not an easy task, but it is essential for world leaders not markets to lead reforms.

I must be very clear on that point cooperation in arrest and surrender of persons is essential if there are to be trials.

That is essential.

That is essential.

The very existence of a strong and effective parliament is itself an essential component of any solution to conflict and in the building of peace.

At the same time, maintaining the flow of funds into the Iraqi oil sector is essential, not only for its growth, but for its very survival.

Youth participation is essential.

Fourthly, efficiency is essential.

So security vigilance is essential.

A time out is essential.

But outside help is essential.

Fiscal repair is also essential.

A compromise solution is essential.

In particular, integrated planning is essential.

Third, clarity is essential on financing.

But effective follow up is essential.

We feel that this is essential.

Cooperation is essential for all investigations.

Adequate funding for both is essential.

European banks have been operating on a great deal of debt and very little shareholder capital the essential buffer against potential losses.

But since it is the very nature of a game to have no object except amusement, that is, what distinguishes games from productive activity, it is quite impossible to say that any of a game's arbitrary rules is essential.

Multilateralism is essential in a globalized world.

It is focused on three essential points

Good governance is essential for sustainable development.

Afghan ownership of those processes is essential.

A reaffirmation of political will is essential.

One element of the solution is to compensate the very poor for the higher cost of survival. Over the longer term, more money for fertilizer, and other aid to promote self sufficiency, is also essential.

It is very powerful. It is very exciting.

Language is very different. Language is very precise.

It is very interesting what is happening, very enriching.

As always, it is essential to be informed.

Such a partnership is essential also in Somalia.

Arab involvement in the peace process is essential.

It is therefore essential that it be successful.

And Justice Stevens, writing for the majority, said he had read all about the history of golf, and the essential point of the game is to get very small ball from one place into a hole in as few strokes as possible, and that walking was not essential, but incidental.

The new Commission thus risks losing its authority from the very start of its mandate. Whether it does is a crucial question, because maintaining a high degree of credibility is essential to economic policymaking in the eurozone.

Getting that energy is very, very difficult.

Second, strengthening links between the two communities is essential.

Multilateral engagement is essential for dealing with these threats.

But a common race or religion is not essential.

PARIS Controversy is essential to the advancement of science.

Furthermore, reducing local government financing vehicles exposures is essential.

This is an essential property in electrical wiring systems.

It is essential that reproductive cloning be categorically prohibited.