数学不是沿着一条清理得很好的高速公路小心行进,而是进入一个陌生的荒野的旅程,探险者常常会迷路。
Innovation is not just about technology; it's about changing the way we think and operate.
It is the duty of the human understanding to understand that there are things which it cannot understand.
The best illustrations are those that leave room for the reader's imagination.