Things do not happen. Things are made to happen.
Always desire to learn something useful.
Leap, and the net will appear.
Only the educated are free.
Be thine own palace, or the world's thy jail.
It's always too early to quit.
If you're going through hell, keep going.
Problems are not stop signs, they are guidelines.
Who seeks shall find.
The wise does at once what the fool does at last.
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.