Be gentle to all and stern with yourself.
You never know what motivates you.
Leap, and the net will appear.
To know oneself, one should assert oneself.
If you think you can do it, you can.
Always desire to learn something useful.
Well done is better than well said.
Problems are not stop signs, they are guidelines.
By failing to prepare, you are preparing to fail.
To be a good loser is to learn how to win.
Diversity in the world is a basic characteristic of human society, and also the key condition for a lively and dynamic world as we see today.