Seneca to Lucilius on the length and quality of life

“We should strive, not to live long, but to live rightly; for to achieve long life you have need of Fate only, but for right living you need the soul. A life is really long if it is a full life; but fulness is not attained until the soul has rendered to itself its proper Good, that is, until it has assumed control over itself. What benefit does this older man derive from the eighty years he has spent in idleness? A person like him has not lived; he has merely tarried awhile in life. Nor has he died late in life; he has simply been a long time dying. He has lived eighty years, has he? That depends upon the date from which you reckon his death! Your other friend, however, departed in the bloom of his manhood. But he had fulfilled all the duties of a good citizen, a good friend, a good son; in no respect had he fallen short. His age may have been incomplete, but his life was complete. The other man has lived eighty years, has he? Nay, he has existed eighty years, unless perchance you mean by ‘he has lived’ what we mean when we say that a tree ‘lives.'”

“We should therefore praise, and number in the company of the blest, that man who has invested well the portion of time, however little, that has been allotted to him; for such a one has seen the true light. He has not been one of the common herd. He has not only lived, but flourished. Sometimes he enjoyed fair skies; sometimes, as often happens, it was only through the clouds that there flashed to him the radiance of the mighty star. Why do you ask: ‘How long did he live?’ He still lives! At one bound he has passed over into posterity and has consigned himself to the guardianship of memory.” (Letter 93)