"Innocence always calls mutely for protection when we would be so much wiser to guard ourselves against it: innocence is like a dumb leper who has lost his bell, wandering the world, meaning no harm."

To be African is to be modern - this is the central paradox we must embrace.

My scientific studies have afforded me great satisfaction; and I am convinced that it will not be long before the whole world acknowledges the results of my work.

最大的风险是不冒任何风险。

释义：人的行为必须与自然规律相协调，才能取得成功。这句话强调人与自然的和谐关系。