It is from this absolute indifference and tranquillity of the mind, that mathematical speculations derive some of the most considerable advantages; because there is nothing to interest the imagination; because the judgment sits free and unbiased to examine the point. All proportions, every arrangement of quantity, is alike to the understanding, because the same truths result to it from all; from greater from lesser, from equality and inequality.

When ancient opinions and rules of life are taken away, the loss cannot possibly be estimated. From that moment, we have no compass to govern us, nor can we know distinctly to what port to steer.

Obstinacy, sir, is certainly a great vice; and in the changeful state of political affairs it is frequently the cause of great mischief. It happens, however, very unfortunately, that almost the whole line of the great and masculine virtues--constancy, gravity, magnanimity, fortitude, fidelity, and firmness--are closely allied to this disagreeable quality, of which you have so just an abhorrence; and in their excess all these virtues very easily fall into it.

No government ought to exist for the purpose of checking the prosperity of its people or to allow such a principle in its policy.

The writers against religion, whilst they oppose every system, are wisely careful never to set up any of their own.

A kind Providence has placed in our breasts a hatred of the unjust and cruel, in order that we may preserve ourselves from cruelty and injustice. They who bear cruelty, are accomplices in it. The pretended gentleness which excludes that charitable rancour, produces an indifference which is half an approbation. They never will love where they ought to love, who do not hate where they ought to hate.

All human laws are, properly speaking, only declaratory; they may alter the mode and application, but have no power over the substance of original justice.