Rest, nature, books, music...such is my idea of happiness.

The natural thing to do is to work-to recognize that prosperity and happiness can be obtained only through honest effort. Human ills flow largely from attempting to escape from this natural course. I have no suggestion which goes beyond accepting in its fullest this principle of nature.

Nature is man's inorganic body - that is to say, nature insofar as it is not the human body. Man lives from nature - i.e., nature is his body - and he must maintain a continuing dialogue with it is he is not to die. To say that man's physical and mental life is linked to nature simply means that nature is linked to itself, for man is a part of nature.

There is no result in nature without a cause; understand the cause and you will have no need of the experiment.

Man selects only for his own good: Nature only for that of the being which she tends.

Nature knows no indecencies; man invents them.