<blockquote>Timon finds fault with him for writing so much and calls him a prolific trifler. He died of disease just as Diogenes, who had come in, inquired of him, “Have you need of a friend?” Once too Diogenes, when he came to him, brought a dagger. And when Antisthenes cried out, “Who will release me from these pains?” replied, “This,” showing him the dagger. “I said,” quoth the other, “from my pains, not from life.”

Source: Lives of the Eminent Philosophers (1925) by Diogenes Laërtius, translated by Robert Drew Hicks </blockquote>