Do not weep do not wax indignant. Understand.
The wise does at once what the fool does at last.
Always desire to learn something useful.
To know oneself, one should assert oneself.
Leap, and the net will appear.
The secret of getting ahead is getting started.
Know or listen to those who know.
If you can dream it, you can do it.
Things do not happen. Things are made to happen.
After a storm comes a calm.
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.