The old believe everything, the middle-aged suspect everything, the young know everything.
Leadership is about empowering others to achieve what they didn't think was possible.
To do mathematics is to explore a universe of ideas, where the only limit is your imagination.
The central task of education is to implant a will and facility for learning; it should produce not learned but learning people. The truly human society is a learning society, where grandparents, parents, and children are students together.