And, speaking generally, passion seems not to be amenable to reason, but only to force.

With respect to the requirement of art, the probable impossible is always preferable to the improbable possible.

It is the mark of an educated mind to expect that amount of exactness which the nature of the particular subject admits. It is equally unreasonable to accept merely probable conclusions from a mathematician and to demand strict demonstration from an orator.

Equality is of two kinds, numerical and proportional; by the first I mean sameness of equality in number or size; by the second, equality of ratios.

A common danger unites even the bitterest enemies.

The one exclusive sign of thorough knowledge is the power of teaching.

It is the mark of an educated mind to be able to entertain a thought without accepting it.