There is a lake so tiny
that a mustard seed would cover it
easily, yet everyone drinks from this lake.
Deer, jackals, rhinoceroses and sea elephants
keep falling into it, falling and dissolving
almost before they have time to be born.
Lalla (14th Century North Indian mystic)
The kingdom of heaven is like a single mustard seed, which a man planted in his field. Even though it is the smallest of seeds, it grows into one of the largest plants. And when it is grown, it is the size of a tree, and birds come to live in its branches.
Jesus (1st Century Middle Eastern master)