He was alive, very much alive; and his existence constituted a perpetual public danger!

In their view, their existence here constitutes a challenge to authority which cannot be evaded for long.

I agree that the existence of this race now constitutes a permanent threat to our civilization and we are making experiments along the lines you suggest.

The mere existence of unsolved puzzles within a paradigm does not constitute a crisis.

In fact, Alec's continuing existence on the planet over the last five years constituted a major setback for the sciences of physiology and medicine.

The existence of DNA in all living things constitutes remarkable evidence of evolution.

Sometimes it seems as though the very existence of the United States constitutes a state of war against belief itself.

The existence of patents should not therefore constitute a barrier to the manufacture or purchase of vital medicines.

The continued existence of these hotbeds of conflict constitutes a permanent threat to stability in Georgia.

Furthermore, the existence of poverty and unemployment throughout the Union constitute continuing breaches of fundamental human rights.