What you do today can improve all your tomorrows.
Never complain and never explain.
If you think you can do it, you can.
After a storm comes a calm.
I can, therefore I am.
By failing to prepare, you are preparing to fail.
Be kind whenever possible. It is always possible.
If you're going through hell, keep going.
Things do not happen. Things are made to happen.
To know oneself, one should assert oneself.
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.