As in our lives so also in our studies, it is most becoming and most wise, so to temper gravity with cheerfulness, that the former may not imbue our minds with melancholy, nor the latter degenerate into licentiousness.
Pliny the ElderThe feasant hens of Colchis, which have two ears as it were consisting of feathers, which they will set up and lay down as they list.
Pliny the Elder