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

To those who study her, Nature reveals herself as extraordinarily fertile and ingenious in devising means, but she has no ends which the human mind has been able to discover or comprehend.

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.

Both the cockroach and the bird would get along very well without us, although the cockroach would miss us most.

February... Now more than ever one must remind oneself that it is wasteful folly to wish that time would pass, or - as the puritanical old saying used to have it - to kill time until it kills you.

The mind leaps, and leaps perhaps with a sort of elation, through the immensities of space, but the spirit, frightened and cold, longs to have once more above its head the inverted bowl beyond which may lie whatever paradise its desires may create.

The most serious charge which can be brought against New England is not Puritanism but February.