You don't lose when you get knocked down. You lose when you stay down. - Muhammad Ali

The person who seeks knowledge while in his youth is similar to the act of inscribing something upon a rock; while the person who seeks knowledge while he is old is similar to the act of writing something upon the water.

Jabir reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "The metaphor of the five prayers is that of a sizeable flowing river at the door of one of you in which he washes five times every day."

Ibn 'Abbas said, "The Messenger of Allah, may Allah bless him and grant him peace, passed by some graves at Madina and turned his face towards them and said, "Peace be upon you, O people of the graves! May Allah forgive us and you. You preceded us and we are following afterwards."