Science has yet to isolate the Godiva Chocolate or Prada gene, but that doesn't mean your weakness for pricey swag isn't woven into your DNA. According to a new study of identical twins, it's less TV ads or Labor Day sales that make you buy the things you do than the tastes and temperaments that are already part of you at birth.

The best thing about science is that hard, empirical answers are always there if you look hard enough. The best thing about religion is that the very absence of that certainty is what requires - and gives rise to - deep feelings of faith.

When I began in 1960, individuality wasn't an accepted thing to look for it was about species-specific behaviour. But animal behaviour is not hard science. There's room for intuition.

Women tend to be more intuitive, or to admit to being intuitive, and maybe the hard science approach isn't so attractive. The way that science is taught is very cold. I would never have become a scientist if I had been taught like that.

In Israel, a land lacking in natural resources, we learned to appreciate our greatest national advantage: our minds. Through creativity and innovation, we transformed barren deserts into flourishing fields and pioneered new frontiers in science and technology.