Two urns on Jove's high throne have ever stood, the source of evil one, and one of good; from thence the cup of mortal man he fills, blessings to these, to those distributes ills; to most he mingles both.
HomerIt is equally bad when one speeds on the guest unwilling to go, and when he holds back one who is hastening. Rather one should befriend the guest who is there, but speed him when he wishes.
Homer