No president who performs his duties faithfully and conscientiously can have any leisure.
自由不仅仅是随心所欲的机会;也不仅仅是在既定选项之间选择的机会。自由首先是制定可用选择的机会,对它们进行辩论——然后,是选择的机会。
科学家与公众之间的对话对于负责任的创新至关重要。