Carlton J. H. Hayes,
A Political and Social History of Modern Europe V.1
“ Gustavus Adolphus was one of the most attractive figures of his age—in the prime of life, tall, fair, and blue-eyed, well educated and versed in seven languages, fond of music and poetry, skilled and daring in war, impetuous, well balanced, and versatile. A rare combination of the idealist and the practical man of affairs, Gustavus Adolphus had dreamed of making Protestant Sweden the leading power in northern Europe and had vigorously set to work to achieve his ends. ”
