1581or1582-1643 1605or1606-1638 1859-1938 1881-1966 adriaen anecdotes chile congresses constructivemathematics diaries discoveryandexploration dutch e edmund emotionsinart explorers hendrik history husserl intuitionisticmathematics logic mathematics musicians phenomenology robert sequences(mathematics) symbolicandmathematical topology west-indischecompagnie(netherlands)