Embrace the hard questions. Be wary of the easy answers.

— Unknown

Doubt is not a pleasant condition, but certainty is absurd.

— Voltaire

It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so.

— Mark Twain

Forecasts usually tell us more of the forecaster than of the future.

— Warren Buffett

The future you shall know when it has come; before then forget it.

— Aeschylus

Those who have knowledge don’t predict; those who predict don’t have knowledge.

— Lao Tzu

No amount of sophistication is going to allay the fact that all of your knowledge is about the past and all your decisions are about the future.

— Ian E. Wilson (former Chairman of GE)

I contend that for a nation to try to tax itself into prosperity is like a man standing in a bucket and trying to lift himself up by the handle.

— Winston Churchill

In religion and politics, people’s beliefs and convictions are in almost every case gotten at second hand, and without examination.

— Mark Twain

I have been through some terrible things in my life, some of which actually happened.

— Mark Twain

A banker is a fellow who lends you his umbrella when the sun is shining, but wants it back the minute it begins to rain.

— Mark Twain

Where all think alike, no one thinks very much

— Walter Lippmann

If you keep repeating yourself you haven’t solved the problem

— Unknown

We strive for the forbidden

— Ovid

It is impossible to defeat an ignorant man in argument.

— William G. McAdoo

Justice is what is decided when equal forces are apposed, while possibilities are what superiors impose and the weak acquiesce to.

— Thucydides

… long time training in action gives more assurance than brief encouragement in fine speeches

— Thucydides

For that which is sudden and unexpected and which comes with least accountability is what enslaves the spirit …

— Perikles (Thucydides 104)

The man who doesn’t read good books has no advantage over the man who can’t read them.

— Mark Twain

The difference between the right word and the almost right word is the difference between lightning and a lightning bug.

— Mark Twain

All human beings should try to learn before they die what they are running from, and to, and why.

— James Thurber

Never let your sense of morals get in the way of doing what’s right.

— Isaac Asimov

It is the mark of an educated mind to be able to entertain a thought without accepting it.

— Aristotle

I’ve been trying for some time to develop a lifestyle that doesn’t require my presence.

— Garry Trudeau

No victor believes in chance.

— Friedrich Nietzsche

We hang the petty thieves and appoint the great ones to public office.

— Aesop

All that is required for evil to prevail is for good men to do nothing

— Edmund Burke

Any fool can make a rule, and any fool will mind it.

— Henry David Thoreau

Formal education will make you a living; self-education will make you a fortune.

— Jim Rohn

Men have become the tools of their tools

— Henry David Thoreau

There are a lot of things to think about, but nothing to worry about.

— Unknown

Pride is a master of deception: when you think you’re occupied in the weightiest business, that’s when he has you in his spell.

— Marcus Aurelius

Everything is vague to a degree you do not realize till you have tried to make it precise.

— Bertrand Russell

Well done is better than well said.

— Benjamin Franklin

He that is good for making excuses is seldom good for anything else.

— Benjamin Franklin

the philosophers have only interpreted the world differently, what matters is to change it.

— Marx

The heart has its reason which reason does not know.

— Pascal

For never to be able to control passion shows a weak nature and ill-breeding;

— Plutarch’s Lives - Solon

The greatest leaders don’t rule. They inspire!

— Robert Mondavi

If you would persuade, you must appeal to interest rather than intellect.

— Benjamin Franklin

You can have everything in life that you want if you just give enough other people what they want.

— Zig Ziglar

Life is short, the art long, opportunity fleeting, experiment treacherous, judgement difficult.

— Hippocrates

I could use a hundred people who don’t know there is such a word as impossible.

— Henry Ford

Confidence is the feeling you sometimes have before you fully understand the situation.

— Anon.

Failure is the opportunity to begin again more intelligently.

— Henry Ford

Drive thy business or it will drive thee.

— Benjamin Franklin

An investment in knowledge always pays the best interest.

— Benjamin Franklin

Whatever you can do, or dream you can, begin it. Boldness has genius, power and magic in it.

— W.H. Murray, The Scottish Himalayan Expedition

He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully.

— 2 Corinthians 9:6

Pardon him, Theodotus; he is a barbarian, and thinks that the customs of his tribe and island are the laws of nature.

— George Bernard Shaw, Caesar & Cleopatra

Trickery and treachery are the practices of fools that have not the wits enough to be honest

— Benjamin Franklin

Simplicity is the ultimate sophistication.

— Leonardo da Vinci

Great works are performed, not by strength, but by perseverance.

— Samuel Johnson

Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.

— Mark Twain

100% of the shots you don’t take don’t go in.

— Wayne Gretsky

Computers are useless, they only give you answers.

— Pablo Picasso

Be not simply good, be good for something.

— Henry David Thoreau

Thus the wise win before they fight, while the ignorant fight to win.

— Sun Tzu

The master is content to serve as an example and not to impose her will.

— Tao Te Ching