Till now man has been up against Nature: from now on he will be up against his own nature.

-Gabor, Dennis
  Inventing the Future.

All argument is against it; but all belief is for it.

-Johnson, Samuel known as Dr Johnson
  Remark, 31 Mar, on the existence of ghosts. Quoted in James Boswell The Life of Samuel Johnson (1791), vol.3.

One fifth of the people are against everything all the time.

-Kennedy, Robert F(rancis)
  In the Observer, May.

The things people had once held against her† unconventional beauty†un-American elegance, the taste for French clothes and French foodöwere suddenly no longer liabilities but assets.

-Schlesinger, Arthur M(eier),Jr
  OnJacqueline Kennedy's post-election image. AThousand Days.