1. There is a road in the mountain of books, but there is no limit to the ocean of learning. This sentence is relatively common. It is the abbreviation of the road to the mountain of books and the boat to the endless sea of ??learning.

2. Water drops penetrate rocks, and ropes cut wood. This is talking about the importance of persistence.

3. Indifferent and clear aspirations, tranquility and far-reaching. This sentence has a relatively high artistic conception. It means that only by looking down on worldly fame and wealth can one's ambitions be clear; only by being peaceful in body and mind can one realize lofty ideals.

4. I hope it is helpful to you.