Ice, before the sun rises, is as hard as gold. Fire, when there is no water, is as hot as iron in a furnace. However, hard ice can easily be melted by the sun in summer and fire can be extinguished by water. In the same fashion, although the esoterists appear to be noble and wise, they are like those who rely on the hardness of ice, without seeing the potential of the sun, or fire without considering water.

Oto Gozen Go-shōsoku, A Letter to Lady Oto, Nyonin Gosho, Letters Addressed to Female Followers, Page 116