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

Voltaire

persons, virtue, age, energy

I will never be an old man. To me, old age is always 15 years older than I am.

Francis Bacon

never, always, age

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

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

Age is a very high price to pay for maturity.

Tom Stoppard

Bashfulness is an ornament to youth, but a reproach to old age.

Aristotle

age, ornament, repraoch

Growing old is no more than a bad habit which a busy person has no time to form.

Andre Maurois

Growing old, habit

Age is not a particularly interesting subject. Anyone can get old. All you have to do is live long enough.

Don Marquis

age, interesting, live long enough

None are so old as those who have outlived enthusiasm.

Henry David Thoreau

age, old, outlived