The only thing permanent is change.

All human knowledge begins with intuitions, proceeds from thence to concepts, and ends with ideas.

The history of the human race, viewed as a whole, may be regarded as the realization of a hidden plan of nature to bring about a political constitution, internally, and for this purpose, also externally perfect, as the only state in which all the capacities implanted by her in mankind can be fully developed.

Nature does nothing in vain, and in the use of means to her goals she is not prodigal.

The inscrutable wisdom through which we exist is not less worthy of veneration in respect to what it denies us than in respect to what it has granted.

[R]eason is... given to us as a practical faculty, that is, as one that influences the will.

Better the whole people perish than that injustice be done