“These are the intensities that one cannot live with, that he has to outgrow if he wants to survive. But who can help grieving for them? If the blood vessels could hold them, how much better to keep those early loves with us?”

letter to William Winter, 23 April 1886, quoted in Life and art of Edwin Booth, pp. 306–307 https://babel.hathitrust.org/cgi/pt?id=mdp.39015053687821;view=1up;seq=360

Variant: Goldfish get big enough only for the bowl you put them in. Bonsai trees twist in miniature. I would have given anything to keep her little. They outgrow us so much faster than we outgrow them.
Source: My Sister's Keeper

"Aftermath" in the Baltimore Evening Sun http://www.positiveatheism.org/hist/menck05.htm#SCOPESD (14 September 1925)
1920s
Context: Once more, alas, I find myself unable to follow the best Liberal thought. What the World's contention amounts to, at bottom, is simply the doctrine that a man engaged in combat with superstition should be very polite to superstition. This, I fear, is nonsense. The way to deal with superstition is not to be polite to it, but to tackle it with all arms, and so rout it, cripple it, and make it forever infamous and ridiculous. Is it, perchance, cherished by persons who should know better? Then their folly should be brought out into the light of day, and exhibited there in all its hideousness until they flee from it, hiding their heads in shame.
True enough, even a superstitious man has certain inalienable rights. He has a right to harbor and indulge his imbecilities as long as he pleases, provided only he does not try to inflict them upon other men by force. He has a right to argue for them as eloquently as he can, in season and out of season. He has a right to teach them to his children. But certainly he has no right to be protected against the free criticism of those who do not hold them.... They are free to shoot back. But they can't disarm their enemy.
The meaning of religious freedom, I fear, is sometimes greatly misapprehended. It is taken to be a sort of immunity, not merely from governmental control but also from public opinion. A dunderhead gets himself a long-tailed coat, rises behind the sacred desk, and emits such bilge as would gag a Hottentot. Is it to pass unchallenged? If so, then what we have is not religious freedom at all, but the most intolerable and outrageous variety of religious despotism. Any fool, once he is admitted to holy orders, becomes infallible. Any half-wit, by the simple device of ascribing his delusions to revelation, takes on an authority that is denied to all the rest of us.... What should be a civilized man's attitude toward such superstitions? It seems to me that the only attitude possible to him is one of contempt. If he admits that they have any intellectual dignity whatever, he admits that he himself has none. If he pretends to a respect for those who believe in them, he pretends falsely, and sinks almost to their level. When he is challenged he must answer honestly, regardless of tender feelings.

Act II, scene ii.
Aminta (1573)

Des moments libres. Toute vie bien réglée a les siens, et qui ne sait pas les provoquer ne sait pas vivre.
Source: Memoirs of Hadrian (1951), p. 43

Haut doch die Polen, daß sie am Leben verzagen; ich habe alles Mitgefühl für ihre Lage, aber wir können, wenn wir bestehn wollen, nichts andres tun, als sie ausrotten; der Wolf kann auch nicht dafür, daß er von Gott geschaffen ist, wie er ist, und man schießt ihn doch dafür totd, wenn man kann.
Letter to his sister Malwine (26/14 March 1861), published in Bismarck-Briefe (Second edition Göttingen 1955), edited by Hans Rothfels, p. 276 http://books.google.de/books?id=oIkkkcUIfqMC&pg=PA276; as quoted in Hajo Holborn: A History of Modern Germany 1840-1945 (1969), p. 165 http://books.google.de/books?id=rUgOAAAAQAAJ&pg=PA165
1860s

Source: The Pigeon

Source: The Magic Mountain (1924), Ch. 6