Old age is like everything else. To make a success of it, you've got to start young.

Theodore Roosevelt

old, age, everything,

What most persons consider as virtue, after the age of 40 is simply a loss of energy.

Voltaire

persons, virtue, age, energy

Age is an issue of mind over matter. If you don't mind, it doesn't matter.

Mark Twain

issue, age, matter

Old age comes on suddenly, and not gradually as is thought.

Emily Dickinson

old age, suddenly, gradually, thought

Forty is the old age of youth, fifty is the youth of old age.

Hosea Ballou

forty is old age, fifty is youth of old age

None are so old as those who have outlived enthusiasm.

Henry David Thoreau

age, old, outlived

Age is a very high price to pay for maturity.

Tom Stoppard

Old minds are like old horses you must exercise them if you wish to keep them in working order.

John Adams

old minds, exercise, working order, age

Aging is not lost youth but a new stage of opportunity and strength.

Betty Friedan

aging, new stage of opportunity, age