„The secret of getting successful work out of your trained men lies in one nutshell—in the clearness of the instructions they receive.“

„The secret of success behind all men of achievement, lies in the faculty of applying their intellect in all their activities, without being mislead by any surging emotions or feelings. The secret of success in life lies in keeping the head above the storms of the heart.“

—  Chinmayananda Saraswati Indian spiritual teacher 1916 - 1993

Quotations from Gurudev’s teachings, Chinmya Mission Chicago

„Conservatism is itself a modernism, and in this lies the secret of its success.“

—  Roger Scruton English philosopher 1944 - 2020

"Eliot and Conservatism" (p. 194)
A Political Philosophy (2006)

„The secret of success in battle lies often not so much in the use of one's own strength but in the exploitation of the other side's weaknesses.“

—  Samuel Youd British writer 1922 - 2012

When the Tripods Came

„Here is one of the best bits of advice every given about the fine art of human relationships. "If there is any one secret of success," says Henry Ford, "it lies in the ability to get the other person’s point of view and see things from that person’s angle as well as from your own."“

—  Dale Carnegie, How to Win Friends and Influence People

Fonte: How to Win Friends and Influence People (1936), p. 42 (in 2016 edition)

„The big secret in life is there is no secret. Whatever your goal. You can get there if you're willing to work.“

—  Oprah Winfrey American businesswoman, talk show host, actress, producer, and philanthropist 1954

„Before everything else, getting ready is the secret of success.“

—  Henry Ford, livro My Life and Work

My Life and Work (1922)

„The gratitude of most men is but a secret desire to receive even greater benefits.“

—  François de La Rochefoucauld, livro Reflections; or Sentences and Moral Maxims

La reconnaissance de la plupart des hommes n'est qu'une secrète envie de recevoir de plus grands bienfaits.
Variant translation: Gratitude is the lively expectation of favours yet to come.
Maxim 298. Compare: "The gratitude of place-expectants is a lively sense of future favours", attributed to Sir Robert Walpole.
Reflections; or Sentences and Moral Maxims (1665–1678)

„The secret of getting ahead is getting started. The secret of getting started is breaking your complex, overwhelming tasks into small, manageable tasks, and then starting on the first one.“

—  Mark Twain American author and humorist 1835 - 1910

Commonly attributed to Twain in computer contexts and post-2000 inspirational books — the first sentence has also been attributed to Agatha Christie and Sally Berger.
Misattributed

„The secret of success is to triple your rate of failure.“

—  Og Mandino American author 1923 - 1996

„Hard work and training. There's no secret formula. I lift heavy, work hard and aim to be the best.“

—  Ronnie Coleman American bodybuilder 1964

Herald Sun staff (October 13, 2006) "A good life, naturally", Herald Sun, p. 017.

„The secret of sound education is to get each pupil to learn for himself, instead of instructing him by driving knowledge into him on a stereotyped system.“

—  Robert Baden-Powell lieutenant-general in the British Army, writer, founder and Chief Scout of the Scout Movement 1857 - 1941

The Scouter http://www.thedump.scoutscan.com/outlook.html (January, 1912)

„The whole secret of a successful life is to find out what is one's destiny to do, and then do it.“

—  Henry Ford American industrialist 1863 - 1947

„There are no secrets to success. It is the result of preparation, hard work and learning from failure.“

—  Colin Powell Former U.S. Secretary of State and retired four-star general 1937

As quoted in The Leadership Secrets of Colin Powell (2003) by Oren Harari, p. 164.
2000s

„I of animals make choice
That men may get instruction from their voice.“

—  Jean De La Fontaine French poet, fabulist and writer. 1621 - 1695

Book I (1668), Dedication "To Monseigneur the Dauphin".
Fables (1668–1679)
Contexto: History some truths contains, which well may serve
For lessons. In my work you will observe
Ev'ry thing speaks — yea e'en the very fish —
And what they say, to ev'ry man a dish
Serves up; and I of animals make choice
That men may get instruction from their voice.

„Did you take Joyce's engine?'
'My instructions were to disable the car, but one of the men bet Hal a burger he couldn't get the engine out. So Hal removed the engine.“

—  Janet Evanovich, livro Lean Mean Thirteen

Fonte: Lean Mean Thirteen

„Soldiers, Your Highness. Men trained not to think for themselves.“

—  Sean Russell author 1952

Fonte: Sea Without a Shore (1996), Chapter 34 (p. 488)

„One secret of life is that the reason life works at all is that not everyone in your tribe is nuts on the same day. Another secret is that laughter is carbonated holiness“

—  Anne Lamott Novelist, essayist, memoirist, activist 1954

Fonte: Plan B: Further Thoughts on Faith

„Frank Harris has no feelings. It is the secret of his success. Just as the fact that he thinks other people have none either is the secret of the failure that lies in wait for him somewhere on the way of Life.“

—  Frank Harris Irish journalist and rogue 1856 - 1931

Oscar Wilde, letter to More Adey, May 12, 1897, quoted in Hugh Kingsmill Frank Harris (1932) p. 102.
Criticism

„Whenever you interview people who are truly successful at their chosen profession—from teaching to telemarketing, acting to accounting—you discover that the secret to their success lies in their ability to discover their strengths and to organize their life so that these strengths can be applied.“

—  Marcus Buckingham British writer 1966

Fonte: Now, Discover Your Strengths (2001), p. 21