Man should humbly face nature.

The pursuit of knowledge is endless, and that’s what makes it exciting.

Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.

What you are you do not see,what you see is your shadow,

The boundaries of our knowledge are the frontiers of our curiosity.