The theory of computation provides a foundation for understanding what can and cannot be computed.
Literature is the bridge between the individual and the universal.
My life has no script; everything is improvisation.
We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.
In the realm of quantum materials, the concept of topology provides a powerful lens through which we can understand and predict new phases of matter.
Every age has its pleasures, its style of wit, and its own ways.
你不必完美才能激励他人。
《致全国学农工商通电》（1924年4月12日）