A mathematician is a device for turning coffee into theorems.
The soul is like an uninhabited world that comes to life only when God lays His head against us.
The idea of a margin of safety, a Graham precept, will never be obsolete. The idea of making the market your servant will never be obsolete. The idea of being objective and dispassionate will never be obsolete.
We look for anomalies in the data that can give us an edge.