It's kind of interesting and sick that the intellectual culture called the 1960s, "time of troubles," a dangerous period in which a… — Noam Chomsky Copy Share Image
We are entering an increasingly dangerous period of our history. But I'm an optimist. — Stephen Hawking Copy Share Image
In the modern era, our nation experienced constant hardship and difficulties. The Chinese nation reached the most dangerous period. Since then, countless… — Xi Jinping Copy Share Image
The easiest period in a crisis situation is actually the battle itself. The most difficult is the period of indecision - whether… — Richard M. Nixon Copy Share Image