Thomas Frederick Tout , The Cambridge Modern History, Volume 1… (1902)
“ But Albert passed away before he was so much as able to visit the Empire, and in the long reign of his kinsman and successor Frederick III (1440-93) the imperial authority sunk down to its lowest point. A cold, phlegmatic, slow and unenterprising prince, Frederick of Austria busied himself with no great plans of reform or aggression, but seemed absorbed in gardening, in alchemy, and in astrology rather than in affairs of State. Under his nerveless rule the Luxemburg claims over Bohemia and Hungary passed utterly away. ”
