He who busies himself with ...

He who busies himself with things other than improvement of his own self becomes perplexed in darkness and entangled in ruin. His evil spirits immerse him deep in vices and make his bad actions seem handsome.
He who busies himself with things other than improvement of his own self becomes perplexed in darkness and entangled in ruin. His evil spirits immerse him deep in vices and make his bad actions seem handsome.
 Ali ibn Abi Talib

More phrases

Effort only fully releases its reward after a person refuses to quit.
Never complain and never explain.
A good plan violently executed now is better than a perfect plan executed next week.
 George S. Patton
Problems are not stop signs, they are guidelines.
 Robert Schuller
Never give up, for that is just the place and time that the tide will turn.
 Harriet Beecher Stowe

Quotes from the same author

Do not use the sharpness of your speech on your mother who taught you how to speak.
 Ali ibn Abi Talib
The weakest man is the one who is able to correct his moral defects, but doesn't take action.
 Ali ibn Abi Talib
Not every man with a heart is understanding, nor every man with an ear a listener, and nor every man with eyes able to see.
 Ali ibn Abi Talib
A True friend is one who sees a fault, gives you advice and who defends you in your absence.
 Ali ibn Abi Talib
Abstinence from sins is better than seeking help afterwards.
 Ali ibn Abi Talib