"Once a scholar is no longer open to new ideas, he ceases to be a scholar."
Scientist
"The key to understanding is doubt."
"I have always found it easier to learn from the writings of others than from my own experience."
"The truth is not always beautiful, nor beautiful words the truth."
"Mathematics is the gate and key of the sciences."
Note: All information provided on the site is unofficial. You can get official information from the websites of relevant state organizations