Having is not so pleasing a thing as wanting, it may not be logical but it is often true. – Mr. Spock, Star Trek

Even as the stone of the fruit must break, that its heart may stand in the sun, so must you know pain…. [A]ccept the seasons of your heart, even as you have always accepted the seasons that pass over your fields…. – Khalil Gibran, The Prophet

The keenest sorrow is to recognize ourselves as the sole cause of all our adversities. – Sophocles