"I’m a very positive thinker, and I think that is what helps me the most in difficult moments."

Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel to be tough.

The unexamined life is not worth living.

让女性成为理性的生物和自由的公民，她们很快就会成为好妻子；——也就是说，如果男性不忽视丈夫和父亲的职责。

能源的未来在于传统化石能源与可再生能源的融合发展。