Every man is indeed bound to do what he can to promote the good of others, and a man who is of no use to anyone is strictly worthless.

Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it.

And as it is the most generous souls who have most gratitude, it is those who have most pride, and who are most base and infirm, who most allow themselves to be carried away by anger and hatred.

De omnibus dubitandum

Just as we believe by faith that the greatest happiness of the next life consists simply in the contemplation of this divine majesty, likewise we experience that we derive the greatest joy of which we are capable in this life from the same contemplation, even though it is much less perfect.

All is to be doubted.

For each of us there is a set limit to our intellectual powers which we cannot pass.