be opposite

References in classic literature ?
She looked at the lower part of the carriages, at the screws and chains and the tall cast-iron wheel of the first carriage slowly moving up, and trying to measure the middle between the front and back wheels, and the very minute when that middle point would be opposite her.
Theories according to which pleasure and pain are individual sensations or features of sensations have particular difficulty, since it is difficult to understand how pairs of sensations could be opposites.
But pleasure and pain would be opposites even if nihilism were true--how could a meta-ethical theory have implications about the relationship between pleasure and pain?