"The small wisdom is like water in a glass: clear, transparent, pure. The great wisdom is like the water in the sea: dark, mysterious, impenetrable."

"The mind, like a river, flows on and on, but the spirit, like a mountain, stands firm."

"Trees are the earth's endless effort to speak to the listening heaven."

"The true meaning of life is to plant trees, under whose shade you do not expect to sit."

"Nationalism is a great menace. It is the greatest evil that the world is faced with today."