The Enchiridion 22 : 1

If you have an earnest desire toward philosophy, prepare yourself from the very first to have the multitude laugh and sneer, and say, “He is returned to us a philosopher all at once”; and, “Whence this supercilious look?” Now, for your part, do not have a supercilious look indeed, but keep steadily to those things which appear best to you, as one appointed by God to this particular station. For remember that, if you are persistent, those very persons who at first ridiculed will afterwards admire you. But if you are conquered by them, you will incur a double ridicule.