Third, to master the art of clear thinking by learning a new and rigorous language.
You'll need it tomorrow for clear thinking in dealing with the small people.
That one moment of clear thinking, born in anger, was gone.
Since then Boris has started to develop some clear thinking in several policy areas, not least crime.
Effective time management is based on clear thinking and common sense.
I want clear thinking, not solutions that only benefit your country.
It wasn't very clear thinking but I was in shock.
There seems to be a lack of clear thinking among those who have allowed this practice to continue.
Except the price he paid for clear thinking was ours.
So it seems to me we should both give this some clear thinking.