In our hearts those of us who know anything worth knowing know that in March a new year begins, and if we plan any new leaves, it will be when the rest of Nature is planning them too.

Metaphysics may be, after all, only the art of being sure of something that is not so and logic only the art of going wrong with confidence.

When, in the present world, men behave well, that is no doubt sometimes because they are creatures of habit as well as, sometimes, because they are reasonable.

If only the fit survive and if the fitter they are the longer they survive, then Volvox must have demonstrated its superb fitness more conclusively than any higher animal ever has.

The rare moment is not the moment when there is something worth looking at, but the moment when we are capable of seeing.

Any euphemism ceases to be euphemistic after a time and the true meaning begins to show through. It's a losing game, but we keep on trying.

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?