If the universe has an end, it means we are captive fishes in an aquarium! If it has no end, we are lost sheep in the eternal darkness!

Man must spend much more time in extraordinary natural places to grasp much better how remarkable our planet is and to realise what a great privilege and what an enormous joy to be living here!

It is often said that it's a man's world; we must change this fact and create this: It's a human's world!

The presence of even a single poor child on the street means a million defeats for mankind.

Take your hands out of your pocket, because life may push you hardly at any time!

Unless you have a very good reason, never wake up anybody or anything! Let the sleeper sleep in peace.

When you walk inside the nature, nature also walks inside you!