Cats are rather delicate creatures and they are subject to a good many different ailments, but I have never heard of one who suffered from insomnia.

How anyone can profess to find animal life interesting and yet take delight in reducing the wonder of any animal to a bloody mass of fur or feathers?

The cockroach and the bird were both here long before we were. Both could.

Man is, perhaps, no more prone to war than he used to be and no more inclined to commit other evil deeds. But a given amount of ill will or folly will go further than it used to.

The famous balance of nature is the most extraordinary of all cybernetic systems. Left to itself, it is always self-regulated.

Electronic calculators can solve problems which the man who made them cannot solve; but no government-subsidized commission of engineers and physicists could create a worm.

There is no conceivable human action which custom has not at one time justified and at another condemned.