"The key to understanding the future is one word: sustainability."

"Since the first cell culture was set at the beginning of the twentieth century it was believed that all cultured cells, if provided with the proper conditions, would replicate indefinitely. Sixty year…"

"Every sentence in order to have definite scientific meaning must be practically or at least theoretically verifiable as either true or false upon the basis of experimental measurements either practica…"

"Speaking for myself, I am not one of those people who are able to deal with the problem by ignoring the questions: it may be a matter of temperament, but for me the apparent unanswerability of the que…"

"There are no historic or legal precedents to which I can turn in this matter, none that precisely fit the circumstances of a private citizen who has resigned the presidency of the United States. . . .…"