Famous sentences to persuade people to study hard

A famous poem that exhorts people to study hard:

There is a road in the mountain of books, but there is no limit to learning the sea.

Every day when the cock crows, it is the best time for boys to read. Teenagers only know how to play, but don't know how to study hard. When they are old, they regret why they didn't know how to study hard when they were young.

The river runs to the sea, and when will it return to the west? A lazy youth, a lousy age.

Day by day, not afraid of thousands of miles; Always learn, not afraid of thousands of books.

Concentrate on reading, I know that spring has passed, and every inch of time is as precious as an inch of gold.

The days of youth are easy to pass away, and learning is difficult to succeed, so cherish every inch of time and don't let it go easily.

Don't be idle, it's white and sad.

Birds flap their wings before flying high, and people learn before making progress.

When the book is used, I hate it less. It's not difficult. Let's talk about it later.