The algebraic analysis is the most extensive and the most certain of all the sciences; it is the only one which has a method invariable and infallible.
代数分析是所有科学中最广泛和最确定的；它是唯一具有不变和可靠方法的一门科学。
I don't sing to be perfect, I sing to be alive.
The future city will be a ruin from the beginning.
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 exclude, in a manner, all other arts.
Every barrel of oil we produce comes with a commitment to do it better than before.