Early in my business career I learned the folly of worrying about anything. I have always worked as hard as I could, but when a thing went wrong and could not be righted, I dismissed it from my mind.
Julius Rosenwald

Experience - the wisdom that enables us to recognise in an undesirable old acquaintance the folly that we have already embraced.
Ambrose Bierce

Fear nothing but what thy industry may prevent; be confident of nothing but what fortune cannot defeat; it is no less folly to fear what is impossible to be avoided than to be secure when there is a possibility to be deprived.
Francis Quarles

Folly always knows the answer.
Mason Cooley

Folly enlarges men's desires while it lessens their capacities.
Robert South

Folly loves the martyrdom of fame.
Lord Byron

For the subtlest folly proceeds from the subtlest wisdom.
John Webster

For when they see the people swarm into the streets, and daily wet to the skin with rain, and yet cannot persuade them to go out of the rain, they do keep themselves within their houses, seeing they cannot remedy the folly of the people.
Thomas More

Frequent and loud laughter is the characteristic of folly and ill manners.
Lord Chesterfield

Genius creates, and taste preserves. Taste is the good sense of genius; without taste, genius is only sublime folly.
Alexander Pope

He who lives without folly isn't so wise as he thinks.
Francois de La Rochefoucauld

His foe was folly and his weapon wit.
Anthony Hope

Human folly does not impede the turning of the stars.
Tom Robbins

Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition.
Isaac Asimov

I only did my duty to my country when I tried to oppose the criminal folly of Hitler.
Wilhelm Canaris

I prefer the folly of enthusiasm to the indifference of wisdom.
Anatole France

I think it's a lovely idea, but it will not pass the Congress. I live in a world of realities. The policy of our country is that we can drill our way to independence. I think that's a march to folly.
Anna Eshoo

I. cannot stoop to reply to the folly and the slander of every poor Tory partisan who assails me, and I should not have noticed you but for the fact that you are a member of the House of Commons.
John Bright

If it be not a sin, an open, flagrant violation of all the rules of justice and humanity, to hold these slaves in bondage, it is indeed folly to put ourselves to any trouble and expense in order to free them.
Samuel Hopkins

If the fool would persist in his folly he would become wise.
William Blake