Related:

• Possunt quia posse videntur.
• They can because they think they can. -- Virgil
• Not every soil can bear all things. -- Virgil (19 BC)
• They are able because they think they are able. -- Virgil
• Forsan et haec olim meminisse iuvabit. [Perhaps even these things will some day be pleasant to remember.
  ] -- Virgil (70-19 BCE) "The Aeneid" (19 BCE)...
• Timeo Danaos et dona ferentes. [I fear the Greeks though bearing gifts.
  ] - Virgil (Publius Vergilius Maro) (70-19 BCE) "The Aeneid" (19 BCE)...
• They conquer who believe they can. VIRGIL
• For they can conquer who believe they can. -- Virgil
• Arms and the man I sing, who, forced by fate And haughty Juno's unrelenting hate.
  -- John Dryden (1631-1700) -- Virgil, Aeneid, Line 1...