It turns out that all life is interconnected with all other life.

Words can be meaningless. If they are used in such a way that no sharp conclusions can be drawn.

Tell your son to stop trying to fill your head with science - for to fill your heart with love is enough!

When a scientist doesn't know the answer to a problem, he is ignorant. When he has a hunch as to what the result is, he is uncertain. And when he is pretty darn sure of what the result is going to be, he is still in some doubt. We have found it of paramount importance that in order to progress we must recognize our ignorance and leave room for doubt. Scientific knowledge is a body of statements of varying degrees of certainty - some most unsure, some nearly sure, but none absolutely certain.

Although it is uncertain, it is necessary to make science useful. Science is only useful if it tells you about some experiment that has not been done; it is not good if it only tells you what just went on.

It is scientific only to say what is more likely and what less likely, and not to be proving all the time the possible and impossible.

Nature has a great simplicity and therefore a great beauty.