Mankind has probably done more damage to the Earth in the 20th century than in all of previous huma

Mankind has probably done more damage to the Earth in the 20th century, than in all of previous human history.

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From birth man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free.

Water and air, the two essential fluids on which all life depends, have become global garbage cans.

No sooner does man discover intelligence than he tries to involve it in his own stupidity.

I am not a scientist. I am rather an impresario of scientists.

The further a society drifts from the truth, the more it will hate those who speak it.

The most effective way to destroy people is to deny and obliterate their own understanding of their history.

Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all of one’s lifetime.

The great courageous act that we must all do, is to have the courage to step out of our history and past, so that we can live our dreams.