Seneca gives a stoic and disdainful view on busyness.

Nihil minus est hominis occupati quam vivere.

Nothing is less characteristic of a busy man than living.

Nihil ("nothing") is the nominative singular form of "nihilum," meaning "nothing."

Minus ("less") is an adverb

Est ("is")

Hominis ("of a man") is the genitive singular form of "homo," meaning "man" or "person."

Occupati ("occupied" or "busy") is the genitive singular form of "occupatus," agreeing with "hominis."

Vivere ("to live") is in the present active infinitive.