1. It is difficult to force people to find ways, and difficult environment can train talents.

2. Even if you fall a hundred times, you should stand up a hundred and one times.

3. No great cause can be achieved without great difficulties.

4. God's grace is like a candle, and man's will is like wax for making candles. If he wants to climb the paradise on earth on the top of purgatory, he also needs his own will.

5. Only after being tempered can it become a good steel.