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Earth Quotes

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Earth Quotes

“I like to define biology as the history of the earth and all its life - past, present, and future. To understand biology is to understand that all life is linked to the earth from which it came; it is to understand that the stream of life, flowing out of the dim past into the uncertain future, is in reality a unified force, though composed of an infinite number and variety of separate lives.”

“So multifarious are the different classes of truths, and so multitudinous the truths in each class, that it may be undoubtingly affirmed that no man has yet lived who could so much as name all the different classes and subdivisions of truths, and far less anyone who was acquainted with all the truths belonging to any one class. What wonderful extent, what amazing variety, what collective magnificence! And if such be the number of truths pertaining to this tiny ball of earth, how must it be in the incomprehensible immensity!”

“Of all modern notions, the worst is this: that domesticity is dull. Inside the home, they say, is dead decorum and routine; outside is adventure and variety. But the truth is that the home is the only place of liberty, the only spot on earth where a man can alter arrangements suddenly, make an experiment or indulge in a whim. The home is not the one tame place in a world of adventure; it is the one wild place in a world of rules and set tasks.”

“Unfortunately, all life on earth - the only life we know - represents, for all its current variety, the results of a single experiment , for every earthly species evolved from the common ancestry of a single origin. We desperately need a repetition of the experiment (several would be better, but let's not be greedy!) in order to make a judgement. Mars represents our first real hope for a second experiment - the sine qua non - for any proper answer for the question of questions.”