Time is the best teacher but it kills all its students.
contradiction ^^^
if time is a teacher then it does not kill it's students.
_/\_ I would agree; Time does not kill its students except in the sense that we leave these physical bodies. Time only kills these physical forms we reside in for a short time.
People kill their students in relationships and time does appear to change things permanently between people. It often changes others around us to the point that it is difficult to believe we could have been so close and it really meant very little to some of us who have professed love and friendship. It gives us an indication of the depth and concern of those close to us. It shows us who are real friends and who are only fair weathered friends. It proves or disproves the truth of spiritual love for those close to us.
Time can do nothing to those who know eternity. Eternity is what we share as spiritual beings. True spiritual love is not killed by time. Only people kill each other in their relationships. Relationships change through time. But people kill students of time. Time is only a witness of eternity. Eternity lives forever as do the people and relationships that live in it.