The search for knowledge is a long and difficult task.

It is also good to love: because love is difficult. For one human being to love another human being: that is perhaps the most difficult task that has been entrusted to us, the ultimate task, the final test and proof, the work for which all other work is merely preparation. That is why young people, who are beginners in everything, are not yet capable of love: it is something they must learn.

It was a difficult and arduous task that he accepted without fanfare.

Sometimes, I feel promoting a film is a more difficult task than acting!

I was just studying with my father, a very difficult task for me since he was a great, great Qawwali singer.

The most original thing a writer can do is write like himself. It is also his most difficult task.