But all the clocks in the city Began to whirr and chime: 'O let not Time deceive you, You cannot conquer Time - W. H. Auden

Lay your sleeping head, my love Human on my faithless arm; Time and fevers burn away Individual beauty from Thoughtful children, and the grave Proves the child ephemeral; But in my arms till break of day Let the living creature lie: Mortal, guilty, but to me The entirely beautiful.

Some thirty inches from my nose
The frontier of my Person goes,
And all the untilled air between
Is private pagus or demesne.
Stranger, unless with bedroom eyes
I beckon you to fraternize,
Beware of rudely crossing it:
I have no gun, but I can spit.

Between the ages of twenty and forty we are engaged in the process of discovering who we are, which involves learning the differences between accidental limitations which it is our duty to outgrow and the necessary limitations of our nature beyond which we cannot trespass with impunity.