I don't have any particular recipe [for developing new proofs] ... It is the reason why doing research is challenging as well as attractive. It's like being lost in a jungle and trying to use all the knowledge that you can gather to come up with some new tricks, and with some luck you might find a way out.

The true value of a bank is measured by its contribution to social development.

The most important thing in singing is sincerity, technique is just auxiliary.