Without hard work, nothing grows but weeds.
Know or listen to those who know.
Do not weep do not wax indignant. Understand.
Who seeks shall find.
If you think you can do it, you can.
To be a good loser is to learn how to win.
If you can dream it, you can do it.
The wise does at once what the fool does at last.
Be kind whenever possible. It is always possible.
Things do not happen. Things are made to happen.
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.