A person is always startled when he hears himself seriously called an old man for the first time.
Nature gets us out of youth into manhood, as sailors are hurried on board of vessels,—in a state of intoxication. We are hustled into maturity reeling with our passions and imaginations, and we have drifted far away from port before we awake out of our illusions.
 Oliver Wendell Holmes Sr., The Autocrat of the Breakfast-Table (1858). copy citation

Context

“The infancy and childhood of commencing old age have the same ingenuous simplicity and delightful unconsciousness about them as the first stage of the earlier periods of life shows. The great delusion of mankind is in supposing that to be individual and exceptional which is universal and according to law. A person is always startled when he hears himself seriously called an old man for the first time. Nature gets us out of youth into manhood, as sailors are hurried on board of vessels,—in a state of intoxication. We are hustled into maturity reeling with our passions and imaginations, and we have drifted far away from port before we awake out of our illusions. But to carry us out of maturity into old age, without our knowing where we are going, she drugs us with strong opiates, and so we stagger along with wide open eyes that see nothing until snow enough has fallen on our heads to rouse our comatose brains out of their stupid trances.” source