Seneca · On taking one's own life

Letters 77.4

An expedition will be incomplete if one stops half-way, or anywhere on this side of one’s destination; but life is not incomplete if it is honourable. At whatever point you leave off living, provided you leave off nobly, your life is a whole. Often, however, one must leave off bravely, and our reasons therefore need not be momentous; for neither are the reasons momentous which hold us here.

Seneca, Letters to Lucilius 77.4, translated by Richard Mott Gummere