I can only think of one experience which might exceed in interest a few hours spent under water, and that would be a journey to Mars.

The marsh, to him who enters it in a receptive mood, holds, besides mosquitoes and stagnation, melody, the mystery of unknown waters, and the sweetness of Nature undisturbed by man.

A first walk in any new country is one of the things which makes life on this planet worth being grateful for.

To be a Naturalist is better than to be a King.

The isness of things is well worth studying; but it is their whyness that makes life worth living.

Earth has few secrets from the birds.

Butterflies doing strange things in very beautiful ways were in my mind when I sat down, but by the time my pen was uncapped my thoughts had shifted to rocks.

……but work in the field has nothing to do with dignity or with anything except patience, concentration, and eternal vigilance

The fault, dear Brutus, is not in our stars / But in ourselves.” Easy enough to say when you’re a Roman nobleman (or Shakespeare!), but there is no shortage of fault to be found amid our stars.

The control of your mind is most important, and it will be worth your while. You must think deeply. Clear your mind of all bad, unwanted thoughts

Age is a funny thing. So are appearances. Neither is relevant to what one knows, in my opinion.

The pursuit of balance can create imbalance because sometimes something is true.

I don't enjoy eating humble pie.

1947 America blasted off.

We react very quickly in the market. We can make quick changes.

There are two completely different Britains. There's London, and there's the rest of Britain.

Poetry is the exquisite expression of exquisite impressions.

I've never had very high regard for therapists. I owe my health, my mental survival, to my friends and loved ones.