Expect problems and eat them for breakfast.
If you can dream it, you can do it.
Be thine own palace, or the world's thy jail.
It's always too early to quit.
Problems are not stop signs, they are guidelines.
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.
I can, therefore I am.
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.