Immigrants provide skills that we simply cannot afford to do without. They have contributed hugely to Britain's success.

You cannot climb the ladder of success dressed in the costume of failure.

One man cannot practice many arts with success.

One column of truth cannot hold an institution of ideas from falling into ignorance. It is wiser that a person of prudence and purpose save his strength for battles that can be won.

The best translations cannot convey to us the strength and exquisite delicacy of thought in its native garb, and he to whom such books are shut flounders about in outer darkness.

One cannot weep for the entire world, it is beyond human strength. One must choose.

Foreign policy simply cannot be judged by today's headlines that chalk up victories and defeats like so many box scores in the sports sections.

You cannot win if you cannot run.

Bobby Knight told me this: 'There is nothing that a good defense cannot beat a better offense.' In other words a good offense wins.

You cannot make a giant space company in your dorm room. Not today. And the reason is that the heavy lifting infrastructure isn't in place.

I mean simply to say that I want my characters to suggest the background in themselves, even when it is not visible. I want them to be so powerfully realized that we cannot imagine them apart from their physical and social context even when we see them in empty space.

Your body has space within you that cannot die.

It's everywhere, really. It's between the galaxies. It is in this room. We believe that everywhere that you have space, empty space, that you cannot avoid having some of this dark energy.

On flights, I cannot travel economy class, as I am too huge to fit into that space. I always have to travel business class.

A bird cannot fly with one wing only. Human space flight cannot develop any further without the active participation of women.

We must admit with humility that, while number is purely a product of our minds, space has a reality outside our minds, so that we cannot completely prescribe its properties a priori.

There is no such thing as an empty space or an empty time. There is always something to see, something to hear. In fact, try as we may to make a silence, we cannot.

The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.

Justice is the most important thing. In a plural society like Malaysia, you cannot have two laws - one law for the Muslim, one law for the non-Muslim.

Our society cannot progress while our constitution stands still.

We should be uncomfortable with the growing gaps in our society, and we cannot allow ourselves to become desensitized to these injustices.

Your conscious brain cannot multitask. If I'm speaking to you and checking my I-Phone at the same time, I'm doing neither. This is why our society is frazzled; this misconception that we can consciously do more than one thing at a time effectively.

The basic thing nobody asks is why do people take drugs of any sort? Why do we have these accessories to normal living to live? I mean, is there something wrong with society that's making us so pressurized, that we cannot live without guarding ourselves against it?

If you're not producing as much as you consume, or perhaps a little more, then clearly we cannot use the big organization of our society for the purpose of keeping you alive, because your life does not benefit us, and it can't be of very much use to yourself.