The Merchant of Venice

ANTONIO. In sooth, I know not why I am so sad. It wearies me; you say it wearies you; But how I caught it, found it, or came by it, What stuff 'tis made of, whereof it is born, I am to learn; And such a want-wit sadness makes of me That I have much ado to know myself. SALERIO. Your mind is tossing on the ocean; There where your argosies, with portly sail- Like signiors and rich burghers on the flood, Or as it were the pageants of the sea- Do overpeer the petty traffickers, That curtsy to them, do them reverence, As they fly by them with their woven wings.