Job 28:17-21

The gold and the crystal cannot equal it: and the exchange of it shall not be for jewels of fine gold.

No mention shall be made of coral, or of pearls: for the price of wisdom is above rubies.

The topaz of Ethiopia shall not equal it, neither shall it be valued with pure gold.

Whence then cometh wisdom? and where is the place of understanding?

Seeing it is hid from the eyes of all living, and kept close from the fowls of the air.