There is an urge within us, at once both imbecilic and ingenious. Imbecilic, because it will not look beyond its mudhole and move on. Ingenious...
Any love that is dependent on something -- when the thing ceases, the love also ceases. But a love that is not dependent on any thing never ceases. What is [an example of] a love that is dependent on something? The love of Amnon for Tamar. And one that is not dependent on anything? The love of David and Jonathan.
Ethics of the Fathers, 5:16