"Don't gamble.  Take all your savings and buy some good stock and hold it till it goes up, then sell it.  If it don't go up, don't buy it"

Will Rogers 

"A rising tide lifts all boats. It's not until the tide goes out that you realize who's swimming naked."
Warren Buffett

"We must always think about things, and we must think about things as they are, not as they are said to be."
George Bernard Shaw, Playwright

"Don't just do something, stand there!"
Charles Ellis, "Winning the Loser's Game"

"Just making money is not enough anymore. Now we have to worry about our money making money."
Woody Allen, American Filmmaker

"Statistics show that investing your money in the stock market is nearly twice as secure as feeding it to otters."
Dave Berry, Columnist

"Odds are you don't know what the odds are? (contributed by Munzer Haque)"
Belsky, Gary and Thomas Gilovich 

"The average long-term experience investing is never surprising, but the short term experience is always surprising. We now know to focus not on rate of return, but on the informed management of risk."
Charles Ellis

"In investing, what is comfortable is rarely profitable."
Robert Arnott

"Those who are ignorant of investment history are bound to repeat it. Historical investment returns and risks of various asset classes should be studied. Investment results for an asset over a long enough period (greater than 20 years) are a good guide to the future returns and risks of that asset. Further, it should be possible to approximate the future long-term and risk of a portfolio consisting of such assets."
William Bernstein

"Risk is good. Not properly managing your risk is a dangerous leap."
Evel Knievel, Motorcyclist

"If I have noticed anything over these 60 years on Wall Street, it is that people do not succeed in forecasting what's going to happen to the stock market."
Benjamin Graham, Legendary Investor and Author

"If you are prepared to do something stupid repeatedly, there are many professionals happy to take your money."
Richard H. Thaler, "The Winner's Curse"

"Ignore market timers, Wall Street strategists, technical analysts, and bozo journalists who make market predictions...Admit to your therapist that you can't beat the market. Investors would also benefit by remembering this simple phrase: trading is hazardous to your wealth."
Jonathan Clements, Columnist, Wall Street Journal

"Investment Policy (asset allocation) is the foundation upon which portfolios should be constructed and managed."
Charles Ellis

"Investment planning is about structuring exposure to risk factors."
Gene Fama Jr.

"About diversification: One buys two of everything and in the end owns a zoo."
Warren Buffett

"'Tis the part of a wise man to keep himself today for tomorrow, and not venture all his eggs in one basket."
Miguel de Cervantes

"The great investor Benjamin Graham once defined happiness as 'living well within one's means.' Did he mean 'living well within one's means' or 'living well within one's means'?  I think his ambiguity was intentional:  He meant both."

Jason Zweig, The Little Book of Safe Money

Market Timing

“Our stay-put behavior reflects our view that the stock market serves as a relocation center at which money is moved from the active to the patient.­”

Warren Buffett

“We continue to make more money when snoring than when active.”

Warren Buffett

“The only value of stock forecasters is to make fortune-tellers look good.”

Warren Buffett

“My favorite time frame is forever.”

Warren Buffet

“Far more money has been lost by investors preparing for corrections, or trying to anticipate corrections, than has been lost in corrections themselves.”­

Peter Lynch

“I can’t recall ever once having seen the name of a market timer on Forbes‘ annual list of the richest people in the world. If it were truly possible to predict corrections, you’d think somebody would have made billions by doing it.”

Peter Lynch

“Whenever some analyst seems to know what he’s talking about, remember that pigs will fly before he’ll ever release a full list of his past forecasts, including the bloopers.”

Jason Sweig

“‘Market timing’ is unappealing to long-term investors. As in hunting deer or fishing for rainbow trout, investors have learned the importance of ‘being there’ and using patient persistence — so they are there when opportunity knocks.”

Charles Ellis

“What to do when the market goes down? Read the opinions of the investment gurus who are quoted in the WSJ. And, as you read, laugh. We all know that the pundits can’t predict short-term market movements. Yet there they are, desperately trying to sound intelligent when they really haven’t got a clue.”

Jonathan Clements

“Do you know what investing for the long run but listening to market news everyday is like? It’s like a man walking up a big hill with a yo-yo and keeping his eyes fixed on the yo-yo instead of the hill.”

 Alan Ableson

“Only liars manage to always be out during bad times and in during good times.”

Bernard Baruch

“Market timing is impossible to perfect.”

Mark Rieppe

“It must be apparent to intelligent investors that if anyone possessed the ability to do so [forecast the immediate trend of stock prices] consistently and accurately he would become a billionaire so quickly he would not find it necessary to sell his stock market guesses to the general public.”

David L. Babson & Company

“Let’s say it clearly: No one knows where the market is going-experts or novices, soothsayers or astrologers. That’s the simple truth.”

Fortune

“A decade of results throws cold water on the notion that strategists exhibit any special ability to time the markets.”

The Wall Street Journal