Famous quotes containing the words immunity and/or challenge:
“When the peace is a trade route, figures
For the budget, reduction of population,
Life grown sullen and immense
Lusts after immunity to pain.”
—Allen Tate (1899–1979)
“The only use of an obstacle is to be overcome. All that an obstacle does with brave men is, not to frighten them, but to challenge them.”
—Woodrow Wilson (1856–1924)