The really explicit phrase is doors of perception...
Marianne Faithful


There are things known and there are things unknown, and in between are the doors of perception...
Aldous Huxley


Do not mistake your bodies for yourself-neither the physical body, nor thr astral (emotional), nor the mental. Each of them will pretend to be the Self, in order to gain what it wants, but you must know them all, and know yourself as their master...
J. Krishnamurti


You have your way. I have my way. As for the right way, and the only way, it does not exist...
Friedrich Nietzsche