Other authorities, honoured guests, ladies and gentlemen, Many years ago, John F Kennedy recalled an anecdote about the great French Marshall Hubert Lyautei. The Marshall asked his gardener to plant a tree. The gardener objected that the tree was slow growing and would not reach maturity for 100 years. The Marshall replied, 'In that case, there is no time to lose; plant it this afternoon!' That tree has probably reached maturity now. So our generation can enjoy it. That is what sustainability is all about. Looking forward to a better planet for future generations. Sustainability is at the heart of the European Union's energy and climate policy. And if we have more efficient, cleaner and low-carbon energy, we also have fairer markets, more stability for our economy and more security for our citizens. But sustainability must also be part of our legacy. It is only by securing a sustainable energy future that we will also assure the future of our climate. Sustainable energy, like Marshall Lyautey's tree, is a long term undertaking. To have a sustainable future, we must plant the seed today. Louis Hubert Gonzalve Lyautey (November 17, 1854 - July 27, 1934) was a French general, the first Resident-General in Morocco from 1912 to 1925, and from 1921 Marshal of France. Lyautey served as France's Minister of War for three months in 1917.