Ovid, in his elegiac poem Remedia Amoris (‘Remedies for Love’), writes (Ov. rem. 89–94, transl. J. H. Mozley):
Quale sit id, quod amas, celeri circumspice mente,
et tua laesuro subtrahe colla iugo.
Principiis obsta; sero medicina paratur,
cum mala per longas convaluere moras.
Sed propera, nec te venturas differ in horas;
qui non est hodie, cras minus aptus erit.
Consider in swift thought what kind of thing it is you love, and withdraw your neck from a yoke that may one day gall. Resist beginnings; too late is the medicine prepared, when the disease has gained strength by long delay. Ay, and make haste, nor wait on the coming hours; he who is not ready to-day will be less so to-morrow.
We have been warned.