Nature does not proceed by leaps.

If you once forfeit the confidence of your fellow citizens, you can never regain their respect and esteem. You may fool all of the people some of the time; you can even fool some of the people all the time; but you can't fool all of the people all of the time.

Nature does not make jumps

To live by medicine is to live horribly.

It is the genus that gives the characters, and not the characters that make the genus.

To live by medicine is to live horribly.