There is no rational alternative.

I'm trying to be a rational alternative to violence, Mr. Belasko.

The only rational alternative, I shall argue, is to adopt a structuralist approach.

The conservative leader spoke against everything Liet stood for, resisting all forms of change but providing no rational alternatives.

But where was any rational alternative?

More and more often, surrender to the inevitable was once again striking her as the rational alternative, while constant struggle seemed both futile and foolish.

A rational alternative to an imminent unilateral withdrawal would be to turn this entire matter over to United Nations jurisdiction and act accordingly.

Once virtually all members of the population use this strategy, there is no 'rational' alternative.

Ehricke Krafft once observed that we have no rational alternative but to expand the environmental and resource base beyond Earth.

A famous rocket scientist once observed that we have no rational alternative but to expand the environmental and resource base beyond Earth.