• sagacious (adj)

wise; having good judgement “they were sagacious enough to avoid any outright confrontation”

• bibliophile (n)

a lover of books

• esoteric (adj)

intended for a small audience with specialised knowledge or interest; obscure “their discussion of esoteric philosophical theories”

• erudition (n)

the quality of having great knowledge or learning; scholarship “her erudition made her a highly-sought speaker at universities”

• ephemeral (adj)

lasting a very short time; fleeting “an ephemeral fashion”

• epiphany (n)

a moment of sudden and great revelation or realization. "a few years ago, I had an epiphany"

• mercurial (adj)

subject to sudden or unpredictable changes of mood or mind. "his mercurial temperament"

• conviction (n)

a firmly held belief or opinion. "she takes pride in stating her political convictions"

• tristful (adj)

sad, sorrowful, melancholy. “she had tristful eyes while visiting the cemetery”

• opulent (adj)

lush; luxuriant. “the opulent jewels glistened like stars”