Life is like riding a bicycle. To keep your balance you must keep moving.

-Albert Einstein

The bicycle, the bicycle surely, should always be the vehicle of novelists and poets.

-Christopher Morley

For instance, the bicycle is the most efficient machine ever created: Converting calories into gas, a bicycle gets the equivalent of three thousand miles per gallon.

-Bill Strickland, The Quotable Cyclist

The memories of a man in his old age
Are the deeds of a man in his prime.
You shuffle in gloom of the sickroom
And talk to yourself as you die.

Life is a short, warm moment
And death is a long cold rest.
You get your chance to try in the twinkling of an eye:
Eighty years, with luck, or even less.

So all aboard for the American tour,
And maybe you'll make it to the top.
And mind how you go, and I can tell you, 'cause I know
You may find it hard to get off.

-Roger Waters