When the yields of biofuels per hectare are known, one can easily calculate how much of the energy of the sunlight is stored in the biofuels.

If I'd known how much packing I'd have to do, I'd have run again.

At age eleven, I became a member of the circulating library of my home town. From there on I was rarely seen outside but was reading two to four books per week, the subjects ranging from archaeology over ethnology and geography to zoology. Needless to say that I did not do much homework.

I was surprised by how much I liked 'Hacksaw Ridge' and its depth.

If you know how much you've got, you probably haven't got much.

You never know how much time you have left.