"If we were bees, ants, or Lacedaemonian warriors, to whom personal fear does not exist and cowardice is the most shameful thing in the world, warring would go on forever. But luckily we are only men —…"

"The world is a journey, and we are the travelers."

"I am born into an environment — I know not whence I came nor whither I go nor who I am."

"If we were to pursue the idea to its logical conclusion, we would have to assume that every thought, every feeling, every sensation is somehow connected with an elementary process in the brain, with a…"

"The world is a construct of our sensations, perceptions, memories. It is convenient to regard it as existing objectively. But it is not a logical necessity."