A man has need of tough ears to hear himself fairly judged.
And obstinacy is the sister of constancy, at least in vigour and stability.
He who falls obstinate in his courage, if he falls he fights from his knees.
If faces were not alike, we could not distinguish men from beasts; if they were not different, we could not tell one man from another.
It is a sign of contraction of the mind when it is content, or of weariness.
The world is but a school of inquisition; it is not who shall enter the ring, but who shall run the best courses.