Either you run the day or the day runs you.
Well done is better than well said.
The secret of getting ahead is getting started.
Problems are not stop signs, they are guidelines.
To know oneself, one should assert oneself.
If you can dream it, you can do it.
To be a good loser is to learn how to win.
By failing to prepare, you are preparing to fail.
Be gentle to all and stern with yourself.
Always desire to learn something useful.
The grounding in natural sciences which I obtained in the course of my medical studies, including preliminary examinations in botany, zoology, physics, and chemistry, was to become decisive in determining the trend of my literary work.