or communication with someone, but "the cause is my will" is tautological, it's like saying the cause of my will is my will.

Something general (not about trans): I don't get the meaning of "the cause is my will". Does it mean "i don't want to tell you the cause"? Because the will always has causes. In many instances I understand it's our right to not give the reason, for privacy reasons or because we don't want dialogue