“There is nothing so unreasonable as infancy, excepting the maturer stages of life.”

“A country is not born as a democracy. It evolved and matures into a democracy. We are only in the infant stages of the democracy.”

“In short, enjoy the blessing of strength while you have it and do not bewail it when it is gone, unless, forsooth, you believe that youth must lament the loss of infancy, or early manhood the passing of youth. Life's race-course is fixed; Nature has only a single path and that path is run but once, and to each stage of existence has been allotted its own appropriate quality; so that the weakness of childhood, the impetuosity of youth, the seriousness of middle life, the maturity of old age—each bears some of Nature's fruit, which must be garnered in its own season.”
Denique isto bono utare, dum adsit, cum absit, ne requiras: nisi forte adulescentes pueritiam, paulum aetate progressi adulescentiam debent requirere. cursus est certus aetatis et una via naturae eaque simplex, suaque cuique parti aetatis tempestivitas est data, ut et infirmitas puerorum et ferocitas iuvenum et gravitas iam constantis aetatis et senectutis maturitas naturale quiddam habet, quod suo tempore percipi debeat.

“Departs, so life at every stage”

“… memory can restore to life everything except smells, although nothing revives the past so completely as a smell that was once associated with it.”

“The idea of a God was not a lie but a device of the unconscious which needed to be decoded by psychology. A personal god was nothing more than an exalted father-figure: desire for such a deity sprang from infantile yearnings for a powerful, protective father, for justice and fairness and for life to go on forever. God is simply a projection of these desires, feared and worshiped by human beings out of an abiding sense of helplessness. Religion belonged to the infancy of the human race; it had been a necessary stage in the transition from childhood to maturity. It had promoted ethical values which were essential to society. Now that humanity had come of age, however, it should be left behind.”

“Undoubtedly, as it seems to me at least, satiety of all pursuits causes satiety of life. Boyhood has certain pursuits: does youth yearn for them? Early youth has its pursuits: does the matured or so-called middle stage of life need them? Maturity, too, has such as are not even sought in old age, and finally, there are those suitable to old age. Therefore as the pleasures and pursuits of the earlier periods of life fall away, so also do those of old age; and when that happens man has his fill of life and the time is ripe for him to go.”
Omnino, ut mihi quidem videtur studiorum omnium satietas vitae facit satietatem. Sunt pueritiae studia certa: num igitur ea desiderant adulescentes? Sunt ineuntis adulescentiae: num ea constans iam requirit aetas, quae media dicitur? Sunt etiam eius aetatis: ne ea quidem quaeruntur in senectute. Sunt extrema quaedam studia senectutis: ergo, ut superiorum aetatum studia occidunt, sic occidunt etiam senectutis; quod cum evenit, satietas vitae tempus maturum mortis affert.

“Nothing in life is sure, my son. Except the promise of death.”

“Nothing endures except life: the capacity for birth, growth, and renewal.”

“There is nothing to life that has value, except the degree of power—assuming that life itself is the will to power.”