1. “Fate is always against great things.”
2. “The plant kingdom covers the entire earth, offering our senses great pleasure and delights of summer.”
3. “A professor can never better distinguish himself in his work than by encouraging a clever pupil, for the true discovers are among them, as comets amongst the stars.”
4. “A practical botanist will distinguish at the first glance the plant of the different quarters of the globe and yet will be at loss to tell by what marks he detects them.”
5. “Stones grow, plants grow and live, animals grow, live and feel.”
6. “In natural science the principles of truth ought to be confirmed by observation.”
7. “Blessed be the Lord for the beauty of summer and spring, for the air, the water, the verdure, and the song of birds.”
8. “If you do not know the names of the things, the knowledge of them is lost, too.”
9. “Nature does not proceed by leaps and bounds.”
10. “When the spiritual light is concentrated in the brain, everything else must be sinking in the dark.”
11. “To live by medicine is to live horribly.”
12. “If a tree dies, plant another in its place.”
13. “When all the thoughts are concerning one thing and the person loses interest in other things, the melancholy begins.”
14. “It is not God, but people themselves who shorten their lives by not keeping physically fit”
15. “It is the genus that gives the characters and not the characters that make the genus.”
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