There lies at the back of every creed something terrible and hard for which the worshipper may one day be required to suffer. E. M. Forster
Every immigrant who comes here should be required within five years to learn English or leave the country. Theodore Roosevelt
[The] amount of search is not a measure of the amount of intelligence being exhibited. What makes a problem a problem is not that a large amount of search is required for its solution, but that a large amount would be required if a requisite level of intelligence were not applied. Allen Newell
The survival of the United States of America as we know it is at risk. And even more - if more should be required - the future of human civilization is at stake. Al Gore
To whom nothing is given, of him can nothing be required. Henry Fielding
Certainly no man can rightfully be required to join, or support, an association whose protection he does not desire. Lysander Spooner