Looming death can focus the mind. Here Boethius turns his attention on fame and glory.

Gloria vero quam fallax saepe, quam turpis est!

Indeed, how often is glory deceitful, how base it is!

Gloria (glory) is an a decension feminine noun meaning glory or fame and is in the nominative singular form.

Vero (indeed or truly) is used to emphasize or affirm the statement that follows.

Quam (how)

Fallax (deceitful or treacherous) is a mixed declension in the nominative singular form.

Saepe (often or frequently) is an adverb modifying "fallax.

Turpis (base or shameful) is a mixed declension in the nominative singular form.

Est (is).