While on top of Everest, I looked across the valley towards the great peak Makalu and mentally worked out a route about how it could be climbed. It showed me that even though I was standing on top of the world, it wasn't the end of everything. I was still looking beyond to other interesting challenges.

I think I mainly climb mountains because I get a great deal of enjoyment out of it. I never attempt to analyze these things too thoroughly, but I think that all mountaineers do get a great deal of satisfaction out of overcoming some challenge which they think is very difficult for them, or which perhaps may be a little dangerous.

Strong motivation is the most important factor in getting you to the top

Ever since the morning of May 29, 1953, when Tenzing Norgay and I became the first climbers to step onto the summit of Mount Everest, I've been called a great adventurer.

June [Hillary] had been doing all these things - the Himalayas and all the rest of it - so we had done things together for a long time, and, particularly as far as our Sherpas were concerned, we had a very sound, I think, philosophy. So that made it very easy for us to agree on what should be done.

I think the really good mountaineer is the man with the technical ability of the professional and with the enthusiasm and freshness of approach of the amateur.

It's not the moutain we conquer but ourselves.