Rent is that portion of the produce of the earth which is paid to the landlord for the use of the original and indestructible powers of the soil.

The only thing greater than the power of the mind is the courage of the heart.

我不会因为别人的话而改变自己。

The real challenge is not just to feed the world, but to nourish it in a sustainable way.

独裁统治的最佳武器是保密，但民主的最佳武器应该是开放的武器。