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Nothing leads the scientist so astray as a premature truth.

Everybody, as soon as they do a good experiment, their first thought in this lab is, 'That can't be right. I must have screwed it up. What did I do wrong?' And that's the best kind of scientist because they're filled with this self-doubt. And if I'm going to be honest, that's who I am. And it's what drives me.

False facts are highly injurious to the progress of science, for they often endure long; but false views, if supported by some evidence, do little harm, for every one takes a salutary pleasure in proving their falseness.

You can't prove any hypothesis, you can only improve or disprove it.

In science, nothing is ever 100% proven.

One finds the truth by making a hypothesis and comparing observations with the hypothesis.

Truth in science is always determined from observational facts.

In scientific work, those who refuse to go beyond fact rarely get as far as fact.

I believe you need scientific proof that something works before you entrust your health to it.