I decided to do some further research on his work at the Glasgow University Library and found this rather arresting image:

The Abduction of Europa
Rembrandt Harmensz. van Rijn, 1632
Heroes
The idea of the hero was perfected in ancient Greece. For the Greeks, heroes existed on a cosmological level between humans and gods. According to the poet Hesiod, heroes were a godlike race of humans who had lived in a previous age. Although they themselves were mortal, the heroes attracted the attention, and often the protection of, the immortals. In another tradition, heroes emerged when gods and men were still living together as a generation of children of half-mortal, half-divine parentage
In their strength, their passions, and their achievements, the heroes far surpassed ordinary humans. All heroes are nevertheless mortal and in time confront their mortality. Yet even in death a hero may surpass ordinary peoples, for the glorious deeds that have brought him to his death may also bring him everlasting renown. Some, like the great hero Herakles (whom the Romans called Hercules), actually became gods after death. In ancient Greece, heroes had religious cults associated with them and were able to intervene in human affairs, possessing a status similar to that of saints in Christianity. Over the centuries, the definition of a hero broadened to include any human who displayed great strength and courage.
Statue of Hercules (Lansdowne Herakles)
Roman, about A.D. 125
Gods
Gods and goddesses of ancient Greece and Rome have provided the subject matter for much of Western art. For the Greeks, there were 12 main deities (all related to one another) who lived on Mount Olympus, where they observed the progress of mortals. Aside from these major gods, the universe was filled with innumerable minor deities. The Romans, in turn, merged many of their native gods with those of the Greeks.
Since antiquity, stories of the ancient gods and goddesses, such as Zeus, Aphrodite, and her son Eros, continued to be depicted, even while they had lost their religious significance. In the Renaissance, a classical education was required of all learned gentlemen; knowledge of Greece and Rome demonstrated one's knowledge, taste, and status. A universal language of images was reborn, but often with new allegorical and intellectual meanings.