Let unswerving integrity be your watchword.

Fame has also this great drawback, that if we pursue it, we must direct our lives so as to please the fancy of men.

Schisms do not originate in a love of truth, which is a source of courtesy and gentleness, but rather in an inordinate desire for supremacy.

I saw that all things I feared, and which feared me, had nothing good or bad in them save insofar as the mind was affected by them.

I should attempt to treat human vice and folly geometrically... the passions of hatred, anger, envy, and so on, considered in themselves, follow from the necessity and efficacy of nature... I shall, therefore, treat the nature and strength of the emotion in exactly the same manner, as though I were concerned with lines, planes, and solids.

Care of the poor is incumbent on society as a whole.

The greater emotion with which we conceive a loved object to be affected toward us, the greater will be our complacency.