“It is a truth universally acknowledged that a married man in possession of a good fortune must be in want of an heir.”

Source: The Laundry Files, The Fuller Memorandum (2010), Chapter 2, “Pointing the Finger” (p. 32)

Source: Pride and Prejudice and Zombies

Source: Austenland

Source: Self Reliance

Source: Meditations

In response to his wife's question of what she should do if he died in battle, as he left for Thermopylae; as quoted in the "Sayings of the Spartan Women" http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Plutarch/Moralia/Sayings_of_Spartan_Women*.html in the Moralia
Variant translation: Marry a good man, and have good children.

Der thörigste von allen Irrthümern ist, wenn junge gute Köpfe glauben, ihre Originalität zu verlieren, indem sie das Wahre anerkennen, was von andern schon anerkannt worden.
Maxim 254, trans. Stopp
Maxims and Reflections (1833)