政府的科学是我必须研究的，比其他所有科学都重要；立法、行政和谈判的艺术应该取代，实际上在某种程度上排除所有其他艺术。
The science of government it is my duty to study, more than all other sciences; the arts of legislation and administration and negotiation ought to take the place of, indeed to exclude, in a manner, all other arts.
You will never be happy if you continue to search for what happiness consists of. You will never live if you are looking for the meaning of life.
I never try to predict the market; I just try to be prepared for whatever it does.
The boundaries between species are more porous than we think.