独善其身
Better be alone than in ill company.
Solitude is better than ill company.
Keep one's distance.
Keep oneself to oneself.
eg:When making friends,you better remember that it is better alone than in ill company.
中英俚语俗语来源:孟子·尽心上:“穷则独善其身,达则兼善天下。”
反义词:于世沉浮 To drift with the stream.