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.

每一代人都认为自己比前一代人更聪明，比后一代人更明智。

"The world breaks everyone, and afterward, many are strong at the broken places."

Farmers are the unsung heroes of our global food system.

"Approximation algorithms are a testament to the power of compromise in achieving practical solutions."

The mother-child relationship is paradoxical and, in a sense, tragic. It requires the most intense love on the mother's side, yet this very love must help the child grow away from the mother, and to become fully independent.