Philosophy is true mother of the arts [of science].
This is a proof of a well-trained mind, to rejoice in what is good and to grieve at the opposite.
The hope of impunity is the greatest inducement to do wrong.
In nothing do humans approach so nearly to the gods as doing good to others.
The impulse which directs to right conduct, and deters from crime, is not only older than the ages of nations and cities, but coeval with that Divine Being who sees and rules both heaven and earth.
While there's life, there's hope.