We never tell countries that they should have a particular number in terms of a tax number, you know, if countries can make do with whatever average tax they have. The question is, do they apply it to everybody? Or do they give sweetheart deals to some companies?

To give students the best possible chance to succeed, education must prepare them to handle issues that transcend national boundaries.

A more robust approach to global warming is needed if we are to avoid catastrophe. Unlike the recent financial crisis, there is no bailout option for the earth's climate.

There is no upside for the U.K. in Brexit. Only costs that can be avoided and advantages to be seized by remaining in Europe. No one should have to pay the Brexit tax.

Transparency and effective tax co-operation must be shared principles applied by all. Until they are, nations will need to protect themselves against loss of revenues to tax havens.

Water security is not just for domestic policies. International co-operation is crucial to sustainably manage trans-boundary water bodies and river basins.

High levels of inequality generate high costs for society, dampening social mobility, undermining the labour market prospects of vulnerable social groups, and creating social unrest.

In a world that places a growing premium on social skills, education systems need to do much better at fostering those skills systematically across the school curriculum.

It takes collaboration across a community to develop better skills for better lives.

Remember, it is a deep principle of our nature not to regard the safety of those who do not regard their own. If you are indifferent to your own safety, you must not be surprised if those less interested should become more so.

It is no less the duty of the minority than a majority to endeavour to defend the country.

There is a tendency in all parties, when they have been for a long time in possession of power, to augment it.

There is often, in the affairs of government, more efficiency and wisdom in non-action than in action.

War may be made by one party, but it requires two to make peace.

We are as good judges of our interest and safety, and the means of preserving them, as the non-slaveholding States are of theirs, and rather better than they can be of ours.

It is a universal and fundamental political principle that the power to protect can safely be confided only to those interested in protecting, or their responsible agents - a maxim not less true in private than in public affairs.

A compromise is but an act of Congress. It may be overruled at any time. It gives us no security. But the Constitution is stable. It is a rock.

War may make us great, but let it never be forgotten that peace only can make us both great and free.

What is a permanent loan but a mortgage upon the wealth and industry of the country? It is the only form of indebtedness, as experience has shown, by which heavy and durable encumbrance can be laid upon the community.

I will not undertake to offer an opinion on the capacity of Hindustan to produce cotton. The region is large, and the soil and climate various, the population great and wages low; but I must be permitted to doubt the success of the experiment of driving us out of the market, though backed and patronized by English capital and energy.

Of the two, I considered it more important to avoid a war with England about Oregon than a war with Mexico, important as I thought it was to avoid that.

Were there no contrariety of interests, nothing would be more simple and easy than to form and preserve free institutions. The right of suffrage alone would be a sufficient guarantee. It is the conflict of opposing interests which renders it the most difficult work of man.

True consistency, that of the prudent and the wise, is to act in conformity with circumstances and not to act always the same way under a change of circumstances.

Restore, without delay, the equilibrium between revenue and expenditures, which has done so much to destroy our credit and derange the whole fabric of government. If that should not be done, the government and country will be involved, ere long, in overwhelming difficulties.