Only those young people can be accepted as healthy who refuse to be reconciled with the old order and foolishly or wisely struggle against it - such is the will of nature...
All manifest life seems to require a period of sleep, of calm, in which to gain added strength, renewed vigour, for the next manifestation, or awakening to activity. Thus is the march of all progress, of all manifest life - in waves, successive waves, [of] activity and repose. Waves succeed each other in an endless chain of progression.