In this episode, journalist Laurence Garcia meets Gérard Feldzer, an engineer and airline pilot who is now President of Aviation Sans Frontières and Co-founder of Futura-Mobility, a forward-looking innovation think tank studying the challenges of the transport sector. It brings together players from the industrial sector, start-ups, private and public transport, and also researchers and politicians. Garcia and Feldzer discuss the technological progress needed to achieve energy savings in the aviation sector, with the number of passengers expected to rise from 3 to 7 billion by 2050. The famous quote from Rabelais, “Science without conscience is but ruination of the soul”, is Feldzer's motto, as he multiplies initiatives to support transportation that is beneficial and supportive of all.