What you do today can improve all your tomorrows.
Be kind whenever possible. It is always possible.
Well done is better than well said.
I can, therefore I am.
Be gentle to all and stern with yourself.
Know or listen to those who know.
Go for it now. The future is promised to no one.
The dog that trots about finds a bone.
Without hard work, nothing grows but weeds.
By failing to prepare, you are preparing to fail.
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.