Go for it now. The future is promised to no one.
To know oneself, one should assert oneself.
The wise does at once what the fool does at last.
Things do not happen. Things are made to happen.
If you think you can do it, you can.
It's always too early to quit.
Always desire to learn something useful.
Expect problems and eat them for breakfast.
Be kind whenever possible. It is always possible.
Quality is not an act, it is a habit.
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.