今日我們已知有比空氣、水、火和土更基本的東西....
By convention there is color, By convention sweetness, By convention bitterness, But in reality there are atoms and space. -Democritus (c. 400 BCE)
感覺上,存在的是繽紛的色彩,
濃郁的芬芳,
深刻的苦痛,
但是實際上,存在的是原子和空間。
約在 1900 年,人們把原子想作是可穿透的球,內有一些電荷四處彈跳。