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The mind of man has perplexed itself with many hard questions. Is space infinite, and in what sense? Is the material world infinite in extent, and are all places within that extent equally full of matter? Do atoms exist or is matter infinitely divisible?
人类的心灵被许多难题所困扰。空间是无限的吗?在什么意义上?物质世界的范围是无限的吗?在这个范围内的所有地方都同样充满了物质吗?原子存在吗?或者物质是无限可分的吗?