[7]: Geschichte des Zeitalters der Entdeckungen.
[8]: As he lay sick and despairing off Belem, an unknown voice said to him compassionately: 'O fool! and slow to believe and serve thy God.... He gave thee the keys of those barriers of the ocean sea which were closed with such mighty chains, and thou wast obeyed through many lands, and hast gained an honourable fame throughout Christendom.' In a letter to the King and Queen of Spain in fourth voyage.
[9]: Humboldt.
[10]: Biese, op. cit.
[11]: Zoeckler, Geschichte der Beziehungen zwischen Theologie und Naturwissenschaft.
[12]: F. Hammerich, St Birgitta.
[13]: Zoeckler, op. cit.
[14]: Comp. Wilkens' Fray Luis de Leon. Halle, 1866.
[15]: Comp. Wilkens' Fray Luis de Leon. Halle, 1866.
[16]: Comp. Wilkens' Fray Luis de Leon. Halle, 1866.