'rational life' is a correct and usable phrase in written English.
You can use it to refer to a life that is based on reasoning or rational thought, as opposed to one that is based on emotion, impulse, or superstition. For example, "She chose to lead a rational life, making decisions based on objective facts rather than her feelings."
"It's hard for a jazz musician to live a rational life, unless he has an independent income or a busy maximum of work," he said in 1977.
"If we think that we are going to persuade them to live a rational life based on scientific knowledge, we are not only dreaming — it is like believing in the fairy godmother".
In fact, maybe many of us gained: if the markets behave in a rational manner, if we do not submit to hype and hysteria, perhaps we can live a rational life within them?
So we shuffle on, until it's too late to make any decisions at all, and we become helpless pawns in the politics of deferral, and utterly dependent on the humiliating procedures that for all our rational life we so wished to avoid.
It's all right for Observer readers, but there are now literally millions of our fellow citizens who have not been properly educated, and who have no chance of leading a morally rational life – thanks to people who "think" like Nick Clegg.
To achieve maximal fulfillment, homo economicus must organize his chosen pursuits into a rational life plan.
A group of people attempting at great personal cost to promote a rational, life-preserving, economy-enhancing, job-creating energy policy end up facing prison and having their own life and employment chances severely curtailed.
This chapter deals with the concerns for the quantification of general economic and safety criteria for marine structures and for the development of appropriate principles for rational life-cycle design using these criteria.
One way for liberals to respond to the empirical argument is to claim that we can legitimately presume consent for the enhancement of GPMs, since they do not incorporate the expectation of a specific life-plan, and are unlikely to lead to dissonant cases insofar as they are useful to any rational life-plan.
In the 6th century, Ionic rational thought dominated intellectual life, fostering the study of geography and nature and research into matter and the universe.
In this period and down to about 500 bc, Ionic rational thought dominated the intellectual life of Greece.
