Always desire to learn something useful.
Without hard work, nothing grows but weeds.
Wherever you are - be all there.
Be gentle to all and stern with yourself.
By failing to prepare, you are preparing to fail.
Things do not happen. Things are made to happen.
The most effective way to do it, is to do it.
If you think you can do it, you can.
If you've got a talent, protect it.
Quality is not an act, it is a habit.
I learned easily and had time to follow my inclination for sports (light athletics and skiing) and chemistry, which I taught myself by reading all textbooks I could get.