Liberty cannot be preserved without a general knowledge among the people.
Reality is a question of perspective; the further you get from the past, the more concrete and plausible it seems.
释义：只有经过艰苦的努力和考验，才能发现或创造出价值重大的事物。
The pursuit of mathematical truth is a noble endeavor.
The future of energy is not either/or - it's about finding the right balance between traditional and new energy sources.