Logic is the foundation of all mathematical reasoning.

Bring out the best in the team by challenging them with tough but achievable goals, encouraging them with sincerity and trust, motivating them with a compelling vision and listening to them with empathy.

为自己的原则而战比实践这些原则要容易。

Man is by nature a reasonable being, but animals, other than man, are by nature instruments of brute force.

你必须要找到你所爱的东西。