If you think you can do it, you can.

To know oneself, one should assert oneself.

By failing to prepare, you are preparing to fail.

Always desire to learn something useful.

Do not weep do not wax indignant. Understand.

It's always too early to quit.

Know or listen to those who know.

The wise does at once what the fool does at last.

Leap, and the net will appear.