Take every gain without showing remorse about missed profits, because an eel may escape sooner than you think.
Profits on the exchange are the treasures of goblins. At one time they may be carbuncle stones, then coals, then diamonds, then flint stones, then morning dew, then tears.
Whoever wishes to win in this game must have patience and money, since the values are so little constant and the rumours so little founded on truth