Lies

Telling the Truth is ok. I think we should tell the Truth. But sometimes it hurts. I’m not going to tell someone : “Oh, I hate your dress.” It’s not going to add anything in the Universe and it’s going to make this person very unhappy.

So, in which condition can we lie? I’m counting on your answers.
Thank you,
Paulo

DON’T WORRY ABOUT YOUR ENGLISH. BUT IF YOU FEEL MORE COMFORTABLE, POST IN YOUR MOTHER TONGUE (PORTUGUES, ESPANOL, FRAN├žAIS, ETC.).