I should be sorry to ask you to cross the threshold, for my convenience, on such a night,' I cried.

The truth is that we have crossed a threshold in our relations where -- for both of us, for the first time -- our success at home and abroad depends on our cooperation.

So he sets a very very high threshold, for knowledge.

You don't know the tricks.

In fact, in 1968, brain death became the deciding threshold for human life.