Always bear in mind that your resolution to succeed is more important than any one thing. (Abraham Lincoln, 1809-1865)
When the heart is at ease, the body is healthy. (Chinese Proverb)
In mathematics you don’t understand things. You just get used to them. (Johann von Neumann, 1903-1957)
Books have the same enemies as people: fire, humidity, animals, weather, and their own content. (Paul Valery, 1871-1945)
Failure is not falling down, but refusing to get up. (Chinese Proverb)