A right-hand bookend carving depicts a figure solving a mathematical sum, accompanied by a skull resting upon a pile of books, symbols of mortality and learning. : Stone symbols illustrate aspects of learning

A left-hand bookend grotesque points to New Zealand on a geographical globe and is accompanied by an owl sitting on a lamp, symbols of wisdom, light and learning. : Stone symbols illustrate aspects of learning

A figure holds medical symbol the caduceus of Mercury with its two wings and snakes. The rod of Asclepius, with one snake and no wings, is also used as a symbol of healing. : Stone symbols illustrate aspects of learning

A grotesque holds a engineering cogwheel. : Stone symbols illustrate aspects of learning

This figure represents a dentist holding a tooth removed with pliers. : Stone symbols illustrate aspects of learning

A figure wearing a judicial wig holds the scales of justice. : Stone symbols illustrate aspects of learning

A jovial figure holds an unfurled scroll from before the age of print. : Stone symbols illustrate aspects of learning

A geologist with a lantern wields a pickaxe. : Stone symbols illustrate aspects of learning

A grotesque depicts a hooded academic holding up a book. : Stone symbols illustrate aspects of learning