"I was born to be a botanist, and I have never regretted my choice."

"The names of plants are the foundation of botany."

"It is not God, but people themselves who shorten their lives by not keeping physically fit."

"The African is lazy, crafty, negligent, and governed by caprice."

"The earth is the Lord's, and the fullness thereof; the world, and they that dwell therein."