I think the first wisdom is to restrain the tongue.

The primary virtue is: hold your tongue; who knows how to keep quiet is close to God.

Consider in silence whatever any one says: speech both conceals and reveals the inner soul of man.

Do not expect good from another's death.

Bitter are the roots of study, but how sweet their fruit.

This is my firm persuasion, that since the human soul exerts itself with so great activity, since it has such a remembrance of the best, such a concern for the future, since it is enriched with so many arts, sciences, and discoveries, it is impossible but the being which contains all these must be immortal.

All have the gift of speech, but few are possessed of wisdom.