1: Experience is not what happens to a man; it is what a man does with what happens to him. Experience does not fall from the sky; experience can only be gained through practice. Aldous Leonard Huxley

2: Knowledge is a treasure, but practice is the key to it.

Knowledge is a treasure house, but practice is the key to the treasure house. —Fuller

3: The Golden Rule is that there are no golden rules.

The real golden rule is that there are no golden rules. —G.B.Shaw

4: Do not, for one repulse, give up the purpose that you resolved to effect.

Don’t give up what you were originally determined to achieve just because of one failure. Purpose. William Shakespeare

5: Don\'t part with your illusions. When they are gone you may still exist, but you have ceased to live.

Don't give up your illusions. When the illusion is gone, you can still survive, but even though you are alive, you are still dead. Mark Twain

6: Ideal is the beacon. Without ideal, there is no secure direction; without direction, there is no life.

Ideal is the guiding light. Without ideals, there is no firm direction; without direction, there is no life. Leo Tolstoy

7: If you doubt yourself, then indeed you stand on shaky ground.

If you doubt yourself, then your footing is indeed shaky. Ibsen

8: The ideals which have lighted my way, and time after time have given me new courage to face life cheerfully 19 have been kindness, beauty and truth.

Some ideals have been They have led the way for us and constantly given me new courage to face life happily. Those ideals are - truth, goodness and beauty. Albert Einstein (Can you believe it...this was actually said by Einstein) - -!

9: The important thing in life is to have a great aim, and the determination to attain it.

The important thing in life is to have a great aim, and the determination to attain it. . Johan Wolfgang von Goethe

10: Even when the experts all agree, they may well be mistaken.

Even when all the experts all agree, they may well be mistaken. Bertrand Russel

11: the mighty desert is burning for the love of a blade of grass who shakes her head and laughs and flies away.

If you cry because of the loss of the sun, then You will also lose the stars. Rabindranath Tagore (from "The Birds", very famous)

12: Sorrow is hushed into peace in my heart like the evening among the silent trees.

Adversity reveals genius; fortune conceals it.

Suffering reveals talent, good luck conceals talent.

Horace (this man is from ancient Rome, Horace)

13: Other men live to eat, while I eat to live.

Other men live to eat, while I eat to live.

Other men live to eat, while I eat to live. And eat. Socrates Socrates

14: The darkest hour is that before the dawn.

The darkest hour is that before the dawn. Fuller Fuller

15: It is not enough to be industrious, so are the ants. What are you industrious for?

It is not enough to be industrious, so are the ants. It depends on what you are working hard for. H. D. Thoreau

Considering that you requested that no repetition be allowed, I selected 15. There should be no repetitions.