A society grows great when old men plant trees whose shade they know they shall never sit in.

I have no ideas about what the paintings imply about the world. I think it's better if I don't know.

Sustainability is not an option; it's a necessity for the future of agriculture.

All human knowledge is from experience.

Mistakes in the kitchen are just opportunities to learn something new.

数学的美在于它的普遍性。