All changes, even the most longed for, have their melancholy; for what we leave behind us is a part of ourselves; we must die to one life before we can enter into another.
"It is easy to forget how full the world is of people, full to bursting, and each of them imaginable and consistently misimagined."
Energy security is the lifeline of national development. We must unswervingly promote oil and gas exploration and development to ensure national energy supply.
The pursuit of mathematical truth requires both intuition and rigor.