The probability of success is difficult to estimate; but if we never search the chance of success is zero.

A reasonable probability is the only certainty.

It is a part of probability that many improbable things will happen.

The most important thing in life is to stop saying 'I wish' and start saying 'I will.' Consider nothing impossible, then treat possibilities as probabilities.

Probability theory is nothing but common sense reduced to calculation.

The probability that we may fail in the struggle ought not to deter us from the support of a cause we believe to be just.

The first step is to establish that something is possible; then probability will occur.

Probability is not a mere computation of odds on the dice or more complicated variants; it is the acceptance of the lack of certainty in our knowledge and the development of methods for dealing with our ignorance.

All knowledge degenerates into probability.

The most important questions of life are indeed, for the most part, really only problems of probability.

We may not be able to get certainty, but we can get probability, and half a loaf is better than no bread.

When a coincidence seems amazing, that's because the human mind isn’t wired to naturally comprehend probability & statistics.

Life is a school of probability.

The 50-50-90 rule: Anytime you have a 50-50 chance of getting something right, there's a 90% probability you'll get it wrong.

A pinch of probability is worth a pound of perhaps.

We don't deal in absolutes. We deal in probabilities.

Ignorance gives one a large range of probabilities.

Before you invest, you must ensure that you have realistically assessed your probability of being right and how you will react to the consequences of being wrong.

Misunderstanding of probability may be the greatest of all impediments to scientific literacy.

Consider nothing impossible, then treat possiblities as probabilities.

In the beginning there were only probabilities. The universe could only come into existence if someone observed it. It does not matter that the observers turned up several billion years later. The universe exists because we are aware of it.

First, the only certainty is that there is no certainty. Second, every decision, as a consequence, is a matter of weighing probabilities. Third, despite uncertainty we must decide and we must act. And lastly, we need to judge decisions not only on the results, but on how they were made.

Whatever way uncertainty is approached, probability is the only sound way to think about it.

Death is always a constant possibility and probability and of course an inevitability, as well.

A miscalculation is not negligence, nor prudence a crime. I am a scientist. I base my action or inaction upon probability and evidence. There is a reason we call science a discipline! Inferior minds bolt or build pyres to roast the witches in their midst!

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