The Rule of Three, or Golden Rule of Arithmeticall whole Numbers. Be the three termes given 2 3 4. ...To finde their fourth proporcionall Terme: that is to say, in such Reason to the third terme 4, as the second terme 3, is to the first terme 2 [Modern notation: <math>\frac{x}{4} = \frac{3}{2}</math>]. ...Multiply the second terme 3, by the third terme 4, & giveth the product 12: which dividing by the first terme 2, giveth the Quotient 6: I say that 6 is the fourth proportional terme required.

And so, what we've done all of these years is very simple, is use the little tool, which is ask three whys in a row. Because the first why you always have a good answer for. The second why, it starts getting difficult. By the third why, you don't really know why you're doing what you're doing.

Determine the foremost meaningful tasks in your work and life. Use the Rule of 3 on a daily and weekly basis.

Ever mind the Rule of Three...Three times what thou givest returns to thee.

So there’s an iron rule that just as you want to start getting worldly wisdom by asking “Why, why, why?,” in communicating with other people about everything, you want to include why, why, why. Even if it’s obvious, it’s wise to stick in the why.

Rule of 7 in research: You can find out anything if you are willing to go seven levels. If the first source you ask doesn’t know ask them who you should ask next and so on down the line. If you are willing to go to the seventh source you’ll almost always get your answer.

Stop the discussion for a moment, and institute this rule: ‘Each person can speak up for himself only after he has first restated the ideas and feelings of the previous speaker accurately, and to that speaker’s satisfaction.’” I have found this technique very useful, in my private life and in my practice. I routinely summarize what people have said to me, and ask them if I have understood properly.

If I only had three words of advice, they would be, Tell the Truth. If got three more words, I'd add, all the time.

The seventh Definition. The Golden Rule, or Rule of three, is that by which to three tearmes given, the fourth proportionall tearme is found.

There are three rules of behavior,” Theresa replied, now in lecture mode. “The Iron Rule: Treat others less powerful than you however you like. The Silver Rule: Treat others as you’d like to be treated. The Golden Rule: Treat others as they’d like to be treated.

Three Rules of Work:
Out of clutter find simplicity.
From discord find harmony.
In the middle of difficulty lies opportunity.

If I could only give three words of advice, they would be, "tell the truth." If I got three more words, I'd add: "All the time."

Whenever there is an argument between two sides, find the third side.

Students, when you want to say something, think about it three times before you say it. Speak only if your words will benefit yourselves and others. Do not speak if it brings no benefit.