数学的本质在于它的自由。
小说是一面镜子，不仅反映现实，还映照其中隐藏的裂痕。
Don't be afraid to take risks and try new things.
The only limits you have are the ones you set for yourself.
All mankind... being all equal and independent, no one ought to harm another in his life, health, liberty or possessions.