地质学是研究自然界有机和无机领域连续变化的科学。
I believe in positive thinking and visualization.
The only limit to our realization of tomorrow is our doubts of today.
Sustainability isn't an option; it's our responsibility to the next generation.
The only constant in agriculture is change—embrace it.
I have learnt how to live... how to be in the world and of the world, and not just to stand aside and watch.
Life is about growth and change. When you stop growing, you stop living.