Wrinkles should merely indicate where smiles have been.

Mark Twain

wrinkles, merely, age

How incessant and great are the ills with which a prolonged old age is replete.

C.S.Lewis

incessant, great,

Alas, after a certain age every man is responsible for his face.

Albert Camus

certain age, responsible, for his face, age

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

Voltaire

persons, virtue, age, energy

None are so old as those who have outlived enthusiasm.

Henry David Thoreau

old as those who have outlived

You can't help getting older, but you don't have to get old.

George Burns

getting older, age

Age is a very high price to pay for maturity.

Tom Stoppard

Age appears to be best in four things old wood best to burn, old wine to drink, old friends to trust, and old authors to read.

Francis Bacon

appears, things, best, age

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