Creativity is a part of genius that can't really be measured, but that can be explained to a certain extent. One sign of creativity is being able to make connections between seemingly different concepts.

The 'aha moment' that arises at unexpected times, like in a dream or the shower, often emerges after a period of contemplation. Information comes in consciously, but the problem is managed subconsciously, resulting in a solution when the mind least expects it.

It relies on the dynamic interplay of neural networks that work together.

It draws from both the right and left hemispheres of the brain, especially regions in the prefrontal cortex.

Geniuses are rare, numbering roughly one in a million. Genetic potential alone does not predict actual accomplishments.

Advances in genetic research now make it possible to examine human traits. But Intelligence is very complex, and thousands of genes may be involved - each one with a slight effect.

Social and cultural influences can provide that nourishment, creating a cluster of genius at moments and places in history, like Kolkata during the Bengal Renaissance, or Silicon Valley today.

The hungry mind can also find the intellectual stimulation it needs at home, where an environment can be created in which to flourish.

Natural gifts and a nurturing environment can still fail to produce a genius, without motivation and determination to press one forward.

Psychologist Angela Duckworth believes that a combination of passion and perseverance, or grit, drives people to achieve. Big hits emerge after many attempts. Regardless of how brilliant a person is, endurance and discipline are critical to success.

Genius cannot be singled out and cultured and nurtured without support.

• People born in poverty or oppression don't get a chance at working toward anything other than to survive.
• Mozart’s older sister for example, Maria Anna, a brilliant harpsichordist, had her career cut short by her father when she reached the marriageable age of 18.