Keep it simple etc.

Occam’s razor

pluralitas non est ponenda sine necessitate

(multiplicity ought not be posited without necessity)

Keep it simple

carpe diem
(Seize the day)

from Virgil’s Aenid

forsan et haec olim meminisse juabit

(Someday perhaps we’ll remember these things with happiness)

Moriturite salutamus

(We about to die salute you.)

John Milton’s “Sonnet On His Blindness”

When I consider how my light is spent
Ere half my days, in this dark world and wide,
And that one talent, which is death to hide,
Lodged with me useless, though my soul more bent
To serve therewith my Master, and present
My true account, lest He, returning, chide:
“Doth God exact day labor, light denied?”
I fondly ask; but Patience, to prevent
That murmur, soon replies, “God doth not need
Either man’s work, or His own gifts; who best
Bear His mild yoke, they serve Him best. His state
Is kingly. Thousands at His bidding speed,
And post o’er land and ocean without rest;
They also serve who only stand and wait.”