If a man cannot do brain work without stimulants of any kind he had better turn to hand work it is an indication on Nature's part that she did not mean him to be a head worker.

Nowadays the rage for possession has got to such a pitch that there is nothing in the realm of nature whether sacred or profane out of which profit cannot be squeezed.

For a successful technology reality must take precedence over public relations for Nature cannot be fooled.

Nature is by and large to be found out of doors a location where it cannot be argued there are never enough comfortable chairs.

Science cannot solve the ultimate mystery of nature. And that is because in the last analysis we ourselves are a part of the mystery that we are trying to solve.

It seems to be a law of nature inflexible and inexorable that those who will not risk cannot win.

Nature cannot be tricked or cheated. She will give up to you the object of your struggles only after you have paid her price.

Retaliation is related to nature and instinct not to law. Law by definition cannot obey the same rules as nature.

It appears to be a law that you cannot have a deep sympathy with both man and nature.

We cannot command Nature except by obeying her.