" Finn wanted to collect the plants he knew he could sell, and he was teaching Maia. He climbed to the top of the leaf canopy and came back with clusters of yellow fruits which could be boiled up to treat skin diseases. He found a tree whose leaves were made into an infusion to help people with kidney complaints and brought back a silvery fern to rub on aching muscles. Most of these plants had Indian names, but as they sorted their specimens and put them to be dried and stored in labeled cotton bags, Maia learned quickly.
“You’d be amazed how much money people give for these in the towns,” said Finn.
But not everything he collected was for sale. He restocked his own medicine chest also. And every day he bullied Maia about taking her quinine pills.
“Only idiots get malaria in the dry season,” he said. "

― Eva Ibbotson , Journey to the River Sea