Problems are not stop signs, they are guidelines.
Be kind whenever possible. It is always possible.
Know or listen to those who know.
Leap, and the net will appear.
To know oneself, one should assert oneself.
The secret of getting ahead is getting started.
Be gentle to all and stern with yourself.
Always desire to learn something useful.
You never know what motivates you.
Expect problems and eat them for breakfast.
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.