Be gentle to all and stern with yourself.
Without hard work, nothing grows but weeds.
Be thine own palace, or the world's thy jail.
Leap, and the net will appear.
After a storm comes a calm.
Quality is not an act, it is a habit.
Know or listen to those who know.
The wise does at once what the fool does at last.
Either you run the day or the day runs you.
Well done is better than well said.
The initial motivation of the experiment which led to this discovery was a subconscious feeling for the inexhaustible wealth of nature, a wealth that goes far beyond the imagination of man.