The key to credible causal inference is not just the method, but how well the method fits the question at hand.

Every barrel of oil we produce must be the most responsibly produced barrel possible.

"I can resist everything except temptation."

I am convinced that the substitution of a simple tax on the rent of land for the complicated taxes which at present oppress industry would be advantageous to all classes.

生命因为失去爱情而更丰盛。

我跳舞不是为了给人留下深刻印象，而是为了表达自己。

Sustainability isn't an option; it's our responsibility to the next generation.