Problems are not stop signs, they are guidelines.
Know or listen to those who know.
If you're going through hell, keep going.
The dog that trots about finds a bone.
Things do not happen. Things are made to happen.
Be kind whenever possible. It is always possible.
After a storm comes a calm.
Always desire to learn something useful.
Begin to be now what you will be hereafter.
To be a good loser is to learn how to win.
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.