It’s one thing to have a past, and another to be held hostage by it.
The power of mathematics comes from its ability to abstract and generalize, turning specific problems into universal truths.
每个人都知道成为自己的痛苦与欢愉。
The future is not a result of choices among alternative paths offered by the present, but a place that is created—created first in the mind and will, created next in activity.