Quality is not an act, it is a habit.
What you do today can improve all your tomorrows.
Be gentle to all and stern with yourself.
The most effective way to do it, is to do it.
Only the educated are free.
Things do not happen. Things are made to happen.
Problems are not stop signs, they are guidelines.
Without hard work, nothing grows but weeds.
The wise does at once what the fool does at last.
If you think you can do it, you can.
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.