发现的喜悦无疑是人类心灵所能感受到的最活跃的喜悦。
"The joy of discovery is certainly the liveliest that the mind of man can ever feel."
农业部门必须适应以满足不断变化的世界的需求。
The hours of folly are measured by the clock, but of wisdom: no clock can measure.
我从来不知道我对某事的看法，直到我读到我写的东西。
The only limit to our realization of tomorrow is our doubts of today.